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The archive contains several files. One file contains the signed contract, but its identity is unknown. Choose the neutral subject question.

Which file does contain the signed contract?
Which file do contain the signed contract?
Which does the file contain the signed contract?
Which file contains the signed contract?Ճիշտ պատասխան

Բացատրություն

Which file represents the unknown subject of contains, so it is followed directly by the singular verb. Adding does would be unnecessary do-support, and using contain would lose the agreement required by the singular head noun.

Բացատրություն

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