--- Listen! It is still noisy in the head teacher’s office. ---Go and see they have finished correcting the papers yet. A. though B. whether C .unless D. while 查看更多

 

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— Listen! It is still noisy in the head teacher's office.
— Go and see _____ they have finished correcting the papers yet.
[     ]
A.though
B.whether
C.unless
D.while

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