40. —Shall Tom go and play football? —Not he has finished his homework.A. whenB. ifC. unl

发布时间：2020-08-16 12:58:21


40. —Shall Tom go and play football?
—Not      he has finished his homework.
A. when
B. if
C. unless
D. once

网友回答

A. when
B. if
(答案→)C. unless
D. once
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