Two-thirdsoftheearth         bywater.   A.arecovered B....

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Two-thirdsoftheearth         bywater.   A.arecovered B....

Two-thirds of the earth          by water.

    A. are covered  B. is covered   C. is covering  D. are covering

【回答】

B

知识点:动词语态

题型:选择题

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