Knockatthedoor________andperhapsy

发布时间:2020-07-10 22:43:19

Knock at the door ________ and perhaps you will get an answer.













A.once












B.once more











C.at once more











D.more once

网友回答

B解析从本题干中所给的情景可以知道,已经敲过一次了,再敲一下,就能够得到回音。
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