As we all know two thirds of the earth’s surface is water a lot of fish.A. providedB. p

问题补充：

As we all know, two thirds of the earth’s surface is water, a lot of fish.

A. provided

B. providing

C. which provides

D. it provides

答案：

A. provided

(答案→)B. providing

C. which provides

D. it provides

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