Practice Pakistan questions with answers and explanations.
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Scientific facts and general truths use the simple present tense.
Therefore, 'moves' is correct.
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'Need not have bought' means the action was completed but proved unnecessary.
It differs from 'did not need to,' which may mean the action was not done.
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'Yet' in a negative sentence commonly refers to an unfinished action up to now.
The present perfect is the natural tense.
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A simple-present negative with a third-person singular subject uses 'does not.'
The main verb remains in its base form.
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The waiting continued for a period before a past event.
The past perfect continuous emphasizes the duration.
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Future time clauses after 'as soon as' normally use the simple present.
The future meaning is carried by the main clause.
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The main action will happen in the future after another future-completed action.
The main clause therefore uses 'will call.'
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'Must' expresses a strong obligation or legal requirement.
Wearing a seat belt is presented as compulsory.
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'May' is used to ask for permission in a polite, formal way.
The sentence requests permission to borrow the pen.
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'Could' expresses general ability in the past.
The time phrase 'when she was five' requires a past modal.
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'Should have' expresses criticism or regret about a past action not performed.
The speaker believes earlier information was the proper action.
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'May have' expresses a possible explanation for a past event.
The evidence is suggestive but not conclusive.
