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Question

Convert the sentence provided below from its passive voice structure to an active voice structure:

The state secrets had been smuggled out by a double agent before intelligence could act.

This question was previously asked in
SSC Selection Post 2025 Graduate Level Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

A double agent had smuggled out the state secrets before intelligence could act.

'Had been smuggled out' is the passive of the past perfect tense (had been + past participle).

In the active voice the past perfect is had + past participle. The doer 'a double agent' becomes the subject and 'the state secrets' becomes the object.

The past perfect is kept because the smuggling was completed before another past action ('before intelligence could act').

'Has smuggled' is present perfect, 'smuggled' is simple past and 'was smuggling' is past continuous; each changes the tense of the original.

Hence, A double agent had smuggled out the state secrets before intelligence could act.

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