You ________ him so closely; you should have kept your distance. ( 章节：4 难度：3)
- A、shouldn’t have been following
- B、shouldn’t follow
- C、mustn’t follow
- D、couldn’t have been following
正确答案:A
答案解析:有
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You ________ him so closely; you should have kept your distance. ( 章节：4 难度：3)
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