Explanation

The correct option is Trees help to create peaceful surroundings.

The word "surroundings" is a plural noun, so it requires a plural verb.

In this case, the plural verb "help" agrees with the plural subject "Trees."

Explanation

The correct option is: This is the only one of his poems that is worth reading.

In this sentence, the verb "is" agrees with the singular noun "one."

The phrase "of his poems" modifies "one," but it doesn't change the singular nature of the subject.

Therefore, the singular verb form "is" is correct.

Explanation

The correct option is: Cats can see in the darkness.

This sentence is grammatically correct and conveys the general truth about cats' ability to see in low-light conditions.

Explanation

The correct option is: The Japanese couple at the back of the coach were obviously newly-weds.

In this sentence, "The Japanese couple" is the subject.

Since "couple" refers to two people, the verb should be plural.

Therefore, "were" is the correct verb form to agree with the plural subject.

Explanation

The correct option is: We cannot afford to eat in restaurants nowadays.

 It uses the correct verb form "cannot afford" to express the inability to do something due to financial constraints.

Explanation

The correct option is: (c) On page 3, there is an advertisement for a new video camera.

This sentence is grammatically correct and conveys the intended meaning.

It uses the preposition "for" to indicate the purpose of the advertisement, which is to promote a new video camera. 

Explanation

The correct option is: (a) In France the death penalty was abolished in 1981.

This sentence uses the simple past tense to describe an event that happened at a specific point in the past.

Explanation

The correct option is: We look forward to going to Lahore in the evening.

Gerund: The verb "look forward to" requires a gerund (verb + -ing) as its object. So, "going" is the correct form.

Preposition: The preposition "to" is necessary to indicate the destination.

Article: The definite article "the" is used before "evening" to specify a particular evening.

Explanation

The correct option is: The doctor told him to give up smoking.

This sentence is grammatically correct and conveys the intended meaning.

It uses the infinitive form "to give up" to express the action that the doctor is advising.

Explanation

The correct option is: Our friend has an apartment in East London.

This sentence is grammatically correct and uses the preposition "in" correctly to indicate location.