【題目】Listen! I hear someone________ the door.

A. to open B.opening C. openning D. open

【答案】B

【解析】

試題分析：聽，我聽到有人在開門。hear sb. do/doing sth.前者表示看見某人做過某事，只強(qiáng)調(diào)發(fā)生過；后者表示看見某人正在干某事。Listen! 引起注意，說明某個(gè)動(dòng)作正在發(fā)生。故答案為B。

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