--Shall Mary come and play computer games?--No, she has finished her homework.A. whenB. if

发布时间：2020-08-16 11:44:22


--Shall Mary e and play puter games?
--No,     she has finished her homework.
A. when
B. if
C. unless
D. once

网友回答

A. when
B. if
(答案→)C. unless
D. once
解析：本题考查连词。句中unless表示“除非”之意。句意：——玛丽可以来玩电脑游戏吗？——本可以，除非她已经完成她的家庭作业。
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