We can’t do well in examination _________ we study hard in school time.[ ]A.ifB.andC.sinceD.unless-八

题目简介

We can’t do well in examination _________ we study hard in school time.[ ]A.ifB.andC.sinceD.unless-八

题目详情

We can’t do well in examination _________ we study hard in school time.
[     ]
A.if
B.and
C.since
D.unless
题型:单选题难度:中档来源:同步题

答案

D

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