题目内容
I dare say he is not your true friend, because a true friend ______ differently when you were in trouble.
A.acted B.had acted .would act D.would have acted
D
从全句的意思分析,a true friend-differently实际上是指一种假设,而when引导的从句又告诉我们,这是一个与过去事实相反的假设,故用would have acted。
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