Change the following from active to passive: The principal let the students leave the examination hall before time.

The examination hall was left by the students before time.
The students were permitted leaving the examination hall before time.
The students were allowed to leave the examination hall before time.
The principal was letting the students leave the hall before time.

Correct answer: The students were allowed to leave the examination hall before time.

Solution

The verb 'let' in active voice is commonly changed to 'allow' in passive voice. So, 'The principal let the students leave...' becomes 'The students were allowed to leave...'. This preserves both meaning and grammar.

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