题目内容
( ) 9. ―We should plant more trees.
―Yes. Every one of us should ______________ in protecting our environment.
A. play part B. take part
C. take a part D. play a part
D
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题目内容
( ) 9. ―We should plant more trees.
―Yes. Every one of us should ______________ in protecting our environment.
A. play part B. take part
C. take a part D. play a part
D