精英家教網 > 初中英語 > 題目詳情

【題目】Listen! Someone at the door. Please go and answer it.
A.knocks
B.is knocking
C.has knocked
D.was knocking

【答案】B
【解析】句意:聽!有人在敲門。請去看一看。像Listen,look, now等表示現在時間,要用現在進行時態(tài),現在進行時的構成:be+doing;根據Listen!可知現在的時間,要用現在進行時態(tài),結合句意和語境可知選B。

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