--- Where is Jack? I can’t find him anywhere.--- He ______ his homework upstairs

题干

--- Where is Jack? I can’t find him anywhere.
--- He ______ his homework upstairs.

A．might have done

B．must have done

C．might be doing

D．must do

上一题下一题 0.4难度单项选择更新时间:2012-06-12 05:50:45

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