Fill in the Blanks

'have not seen' is the correct option. Option (1) is incorrect because helping verb 'are' is used in Present Tense. Option (3) and Option (4) are incorrect because with 'have', third form of the verb is used.

'have known' is the correct option. Option A is incorrect because helping verb 'are' is used in Present Tense. Option D is incorrect because 'have' is used with singular subjects. Option C is incorrect because with 'have', third form of the verb is used. (known instead of know)

'have worked' is the correct option. Option (2) and Option (3) are incorrect because with 'have', third form of the verb (worked) is used. Option (4) is incorrect because with the first person singular 'have' has been used.

"to" infinitive.

This is a first conditional sentence describing a possible future situation. The correct structure uses present simple ('comes') in the if-clause and 'will be' in the main clause. The other options either use incorrect tenses or don't follow conditional sentence rules.

(1) and (2) are correct. (1) is correct as infinitive ‘to’ is followed by the first form of the verb. (2) is correct as it is a case of passive voice, which takes third form of the verb. That is why (4) is correct. Answer: (4)

(2), (3) and (4) are incorrect because as per the given question, none of these is an appropriate adjective to be used before the infinitive “to visit”. Answer: (1)

(1), (3) and (4) are incorrect because as per the given sentence, none of these is an appropriate adjective to be used before the infinitive ‘to call’. Answer: (2)

(2), (3) and (4) are incorrect because as per the given sentence, none of them is an appropriate adjective to be used before the infinitives ‘to follow.” Answer: (1)

The passage is written in past tense narrative form. 'When the meeting (I)_ to a close, people ___(II)__' establishes a past context. For blank (III), 'wanted' correctly maintains the past tense consistency, describing what the friends desired to do in that past moment.

The blank in the given sentence is a plural noun, i.e. “people”

The given paragraph is based on the past tense

The blank, in the given paragraph, requires an infinitive, which can be formed only if the first form of the verb is  used and that too without adding “s or es”.

The past continuous tense 'was begging' correctly describes an action that was ongoing at a specific moment in the past. The narrative context describes a scene where the old man was in the middle of begging when the speaker arrived. Past continuous (was/were + verb-ing) is used for actions in progress at a past moment.

We require past tense