The children planted more trees and flowers after theyGreener China.A. joined B. took part

发布时间：2020-08-16 08:04:40


The children planted more trees and flowers after they    Greener China.
A. joined
B. took part in
C. became
D. were

网友回答

(答案→)A. joined
B. took part in
C. became
D. were
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