题目内容
【题目】People all the China planted a lot of trees that day. ( )
A. at / onB. on / onC. over / on
【答案】C
【解析】
略
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题目内容
【题目】People all the China planted a lot of trees that day. ( )
A. at / onB. on / onC. over / on
【答案】C
【解析】
略