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题目内容
（乐山师范学院英语语法）
You ____ him so closely; you should have kept your distance.
A. shouldn.t follow
B. mustn.t follow
C. couldn.t have been following
D. shouldn.t have been following
A. shouldn.t follow
B. mustn.t follow
C. couldn.t have been following
D. shouldn.t have been following
参考答案
