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One-third of the area covered with trees. About seventy percent of the trees bee

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One-third of the area covered with trees. About seventy percent of the trees bee

 One-third of the area ________ covered withtrees. About seventy percent of the trees _______ been planted recently.

A．is; has            B．is; have           C．are; have          D．are; has

 

试题答案

【答案】

B

【解析】

试题

标签：withcoveredabouttreesarea

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