问题
完形填空
13. With examinations coming immediately, you ________ the Internet last night.
A．mustn’t surf
B．shouldn’t surf
C．couldn’t have surfed
D．shouldn’t have surfed
答案
答案：D
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13. With examinations coming immediately, you ________ the Internet last night.
A．mustn’t surf
B．shouldn’t surf
C．couldn’t have surfed
D．shouldn’t have surfed
答案：D