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Sincethereisabundantfoodinthesea,itisunderstandablethat...

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问题详情:

Sincethereisabundantfoodinthesea,itisunderstandablethat...

Since there is abundant food in the sea, it is understandable that some of the creatures that   evolved on land __________ to the sea.

A. would have returned              B. could have returned

C. might have returned              D. should have returned

【回答】

D

知识点:虚拟语气与情态动词

题型:选择题

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