Explanation: ‘travelling in’ should be in place of ‘travel in’. RULE: V1 + ing will be used with avoid.

Explanation: ‘has not finished it’ should be used in place of ‘did not finish’. RULE: When an activity began in the past and is still going on at the time of speaking we use the present perfect tense(has/have + V3). In the given sentence, she is still writing the novel. So, ‘has not finished’ should be used.

Explanation: ‘from visiting’ should be used in place of ‘of visiting’. Dissuade from – to persuade someone not to do something. Eg:- I tried to dissuade her from leaving

Explanation: ‘of organizing’ should be used instead of ‘by organize’. The sentence contains a prepositional error. In order to make the sentence grammatically correct and contextually meaningful, we will substitute it with ‘of organizing’ which means to arrange things for their arrival. Hence, option c is the correct answer

Explanation: When an activity began in the past and is still going on at the time of speaking, we use the present perfect tense. In the given sentence, ‘the sum’ has not been solved yet. He is still solving it.

Explanation: ‘found violating the law’ should be used in place of ‘found violated a law’. Use article ‘the’ when talking about something which is already known to the listener or which has been previously mentioned/introduced or discussed. So, the article ‘a’ should be replaced with ‘the’. Past participles should be used.

Explanation: ‘be developed by’ should be used in place of ‘be developing by’. The landscape can only be developed by someone else. Thus, be will take the third form of the verb after it to convert the sentence into passive form.

Explanation: ‘housed’ should be used in place of ‘housing’. Housed – simple past and past participle of the house that means to give a person or animal a place to live, or to. So, ‘housed’ should be used in the latter part of the sentence.

Explanation: ‘will be followed by’ should be used in place of ‘will following by’. “Will be followed by” is the correct replacement as the sentence is in passive voice and the correct structure to be used in the passive voice is as follows :Object+ will/shall + be + verb (IIIrd form) + by + subject… For example, he will be informed by THE POLICE later.

Explanation: ‘he should leave’ should be replaced with ‘they should leave’. In the given sentence, the pronoun ‘they’ should be used as it is used for plural nouns ‘those’ who have not received the invitation’.

Explanation: ‘as rich as’ should be used in place of ‘as rich than’. In the given sentence, the comparison has been made and the structure ‘as…as’ is used to compare things that are of similar proportion. Hence, option c is the correct answer to be used in the place of the given segment.

Explanation: ‘the latter is the more’ should be used. RULE: While making comparisons between two things a comparative degree(more) is used and not the superlative degree. In the given sentence, the comparison is done between Rama and Usha. So, ‘more’ should be used. The difference between ‘latter’ and ‘later’:- ‘Later’ is used with reference to time. Eg: I will go later. ‘Latter’ is used when two things are there and we are referring to the second one.

Explanation: Future perfect tense is used to express an action which will occur in future and is thought to be completed in future before a specific point. It is often used with a time expression beginning with ‘by’: by then/ by that time/ by midnight/ by the end of the year/ etc and It takes “will have + V3” with it. In this sentence, ‘by next week’ is given; So, ‘will have made’ should be used.

Explanation: in doing what he thought Out of the given options “in doing what he thought” is the best choice. You can either use ‘in’ or ‘with’ after ‘persist’ depending on the situation. Examples:- She persisted in blaming herself for what had happened. The police officer persisted with his interrogation.

Explanation: “We have pleasure” should be used in place of “We are going to have pleasure” RULE: “Be(is/are) going to” expresses that something is a plan. It expresses the idea that a person intends to do something in the future. In this sentence, there is no plan so “are going to” should be removed.

Explanation: “to do” should be replaced with “from doing” Phrasal Verb: prevent (someone or something) from (doing something) ‘Prevent’ is followed by preposition ‘from’ to convey the correct contextual meaning of the phrasal verb.’ from’ is followed by the V-ing form of the verb. E.g: The police tried to prevent him from leaving.

Explanation: “to the specifications given by” should be used. The word ‘conform’ is followed by the preposition ‘to/with’. However, the passive structure of the sentence makes it necessary to use ‘by’ after ’given’.

Explanation: “recognised by” should be used in place of “recognize from” . ‘be’ should be followed by the “III form of the Verb” in the sentence written in the passive voice. However, ‘By’ will replace ‘from’.

Explanation: “have had a terrible cold for” should be used. The given sentence refers to something being happening for some period of time. So, we have to use either present perfect or present perfect continuous tense. So, the correct sentence will be: I have had a terrible cold for several days now.

Explanation: ‘than’ should be used in place of ‘when’. RULE: ‘No sooner’ — than’ is a conjunction pair that is used to say that something happened almost immediately after something else. We always use the inversion form in sentences starting with: ‘Hardly/scarcely/barely/no sooner/ not only/neither + ‘Helping Verb + Subject + Main verb’. Eg: Hardly had she reached the bus stop when her boss reached.

Explanation: ‘On the ignorance’ will be replaced with ‘at the ignorance of’ as astonish is followed by the preposition at(mostly used), by, with. Hence option d is the correct answer.

Explanation: ‘is caught in’ should be used in place of ‘are caught by’. RULE: ‘Unlike’, ‘no less than’, ‘nothing but’, ‘As well as’, ‘with’, ‘along with, ‘together with’, ‘and not’, ‘In addition to’, ‘but’, ‘besides’, ‘except’, ‘rather than’, ‘accompanied by’ and ‘like’. If these words are the connecting words that join two subjects, then the verb used will be according to the ‘first subject’. In this sentence, the first subject ‘the commander’ is singular. So, a singular verb(is) will be used.

Explanation: ‘and have received’ should be used in place of ‘and received’. And received will be replaced with and have received as the sentence is in present perfect tense(has/have + V3). Hence option D is the correct answer.

Explanation: ‘the only mistake’ should be used. ‘The’ is called a definite article. ‘Definite’ means ‘specific’. We use ‘The’ when we talk about something which is already known to the listener or which has been previously mentioned, introduced, or discussed.

Explanation: If a choice has to be made between two persons or things then a comparative degree will be used. Article ‘the’ will be used before the Superlative degree and ‘of the’ will be used after the comparative degree. In this sentence, it is clearly mentioned that ‘he’ is the better singer of the two.

Explanation: Simple Present (Verb I form, ‘know’) should be used in place of “am not knowing” in this sentence.

Explanation: No improvement

Explanation: “It’s” should be used in place of its. It’s – It is The word advisable is followed by “to” and only option b has this structure so this will be the answer to the question.

Explanation: “for an hour” should be used in place of “ from a hour”.RULE: When we pronounce a word we have to go by the initial sound. In the given sentence total time is given so for should be used in place of “from”

Explanation: No improvement

Explanation: If “I does not pay” will be replaced with If “I do not pay” as ‘I’ is followed by ‘do’ or plural verb and the structure for a conditional sentence is as follows: If + simple present tense + will Hence option d is the correct option.

Explanation: No Improvement. A spokesperson of the company explained that the media had misrepresented the facts about the accident in their building.

Explanation: ‘I have reached the counter’ should be replaced with ‘I reached the counter’. The given sentence is in the Past tense. So, V2(reached) will be used.

Explanation: ‘with the responsibility of marketing’ should be used in place of ‘with a responsibility to Marketing’. ‘The’ is called a definite article. ‘Definite’ means ‘specific’. The given sentence states about some specific responsibilities.

Explanation: ‘left’ should be replaced with ‘leave’. Modals take V1 So, ‘Must’ should be followed by V1(leave)

Explanation: ‘waved frantically’ should be used. The given sentence is in the past tense, as it states ‘when they saw their leader’. So, the past form of the verb(waved) will be used.

Explanation: No Improvement

Explanation: The infinitive verb follows the structure ‘TO + V1’ so replace ‘to looked’ with ‘to look’.Here the sentence should be in the past tense i.e. ‘promise’ must be replaced by ‘promised

Explanation: ‘advices’ should be replaced with ‘advice’. The noun advice can be countable or uncountable. In more general, commonly used, contexts, the plural form will also be ‘advice’.

Explanation: ‘I decided to make a donation to help’ should be used.The past indefinite tense is most appropriate to convey the meaning of the given sentence. Hence, ‘I decided’ will be used.

Explanation: “with respect to” should be used in place of “with respect of” The correct phrase to be used in the given sentence is ‘with respect to’ which means with reference to.

Explanation: Use ‘welcomed the foreign dignitaries’ in place of ‘welcoming a foreign dignitaries’. .The past indefinite tense is most appropriate to convey the meaning of the given sentence.With dignitaries ‘a’ cannot be used. As Dignitaries’ is plural.

Explanation: ‘he was getting into’ should be used in place of ‘he was going in’.‘To get into something’ means to start experiencing it. So, the correct option will be c.