It is not polite to enter others' rooms _______knocking on the door. [ ]A. byB. with C. without

题目简介

It is not polite to enter others' rooms _______knocking on the door. [ ]A. byB. with C. without

题目详情

It is not polite to enter others' rooms _______ knocking on the door.
[     ]
A. by
B. with
C. without
题型:单选题难度:偏易来源:广东省中考真题

答案

C

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