________(knock)atthedoorbeforeyouentermyroom,please.

問題詳情：

________ (knock) at the door before you enter my room, please.

【回答】

Knock　句意：進我的房間前請你先敲門。本句為祈使句，故用動詞原形。

知識點：祈使句 感嘆句

題型：閱讀填空