______at the door before you come into the room.A、HitB、KnockC、TouchD、StrikeB

游客2024-01-17 461

问题 ______at the door before you come into the room.

选项 A、Hit
B、Knock
C、Touch
D、Strike

答案 B

解析本题考查固定搭配。knock at the door“敲门”，是固定用法。句意为：你进房间之前请敲门。

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