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Three-fourths of the surface of the earth the sea. [ ] A.isB.are C.wereD.has bee

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Three-fourths of the surface of the earth the sea. [ ] A.isB.are C.wereD.has bee

Three-fourths of the surface of the earth ________ the sea.

[]

A.isB.areC.wereD.has been

试题答案

答案:A

提示:

分数修饰主语时,若主语为不可数名词或单数可数名词时,谓语动词用单数;若主语是复数名词,谓语动词用复数。