题目内容
- Look, John's fallen asleep.
- Oh, he ________ too late last night.
A. might sit up B. should have sat up
C. could sit up D. must have sat up
D
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题目内容
- Look, John's fallen asleep.
- Oh, he ________ too late last night.
A. might sit up B. should have sat up
C. could sit up D. must have sat up
D