When my cat is hungry, he the cage door his paw.A. knocks on, inB. knocks at, withC. kno

发布时间：2020-08-21 14:39:44

When my cat is hungry, he      the cage door      his paw.
A. knocks on, in
B. knocks at, with
C. knocks on, by
D. knocks at, uses

网友回答

A. knocks on, in
(答案→)B. knocks at, with
C. knocks on, by
D. knocks at, uses
解析：： knock at sth with sth，意思为用···敲···，故选B
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