题目内容
【题目】Every means _________, but none proved __________.
A. have tried; a success
B. have been tried; successful
C. has tried; to be successful
D. has been tried; successful
【答案】D
【解析】考查主谓一致；语态。means 单复数同形，但前有every修饰，故为单数，再者means和try之间是被动关系，故选D。
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