摘要：I don’t know whether you happen ,but I am going to study in the U.S.A.this ?December. A.to hear B.to have heard C.to be heard D.to be hearing 答案:B 提示:不知道你是否恰好听说过,我今年十二月要去美国学习.happen后接动词不定式,这里强调动作的完成,所以用不定式的完成式.

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