摘要：33．I don’t know whether you happen that he has been away for two months． A．to be heard B．to be hearing C．to hear D．to have heard
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I don't know whether you happen ____ that he has been away for two months.
[ ]
A. to be heard
B. to be hearing
C. to hear
D. to have heard
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B. to be hearing
C. to hear
D. to have heard
I don’t know whether you happen ____ that he has been away for two months．
A．to be heard B．to be hearing C．to hear D．to have heard
查看习题详情和答案>>