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—Where is Jack?I can’t find him anywhere.—He his homework upstairs.A. might have doneB.

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解决时间 2021-01-03 19:24
  • 提问者网友:聂風
  • 2021-01-03 10:25
—Where is Jack?I can’t find him anywhere.
—He his homework upstairs.
A. might have done
B. must have done
C. must be doing
D. must do
最佳答案
  • 五星知识达人网友:佘樂
  • 2021-01-03 10:43
A. might have doneB. must have done(答案→)C. must be doingD. must do解析:must be doing是对目前正在发生的事进行推测。
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  • 1楼网友:慢性怪人
  • 2021-01-03 11:13
对的,就是这个意思
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