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Some people waste a lot of food others haven't enough to eat. A.once B.when C.as

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Some people waste a lot of food others haven't enough to eat. A.once B.when C.as

Some people waste a lot of food ____ others haven'tenough to eat.

A.once             B.when             C.as               D.while

 

试题答案

【答案】

D

【解析】

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