问题
单项选择题
You （）him so closely; you should have kept your distance．
A.shouldn’tfollow
B.mustn’tfollow
C.couldn’t have been following
D.shouldn’t have been following
答案
参考答案：D
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You （）him so closely; you should have kept your distance．
A.shouldn’tfollow
B.mustn’tfollow
C.couldn’t have been following
D.shouldn’t have been following
参考答案：D