问题
选择题
—Where is Wang Fei?
—He is playing on the ground. He _______ his homework. [ ]
A. had finished
B. must have finished
C. should finish
D. must be finished
答案
答案：B
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—Where is Wang Fei?
—He is playing on the ground. He _______ his homework. [ ]
A. had finished
B. must have finished
C. should finish
D. must be finished
答案：B