高中英语2929._______ plenty of fresh air go

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高中英语29
29._________________ plenty of fresh air __________ good health.A.Having exposed to ; contributes to B.Having been exposed to ; contributed to C.Being exposed to ; contributes to D.Exposed to ; contributes to 为什么答案是C ,不是D?C和D 的区别

d是过去分词
这里缺少主语
现在分词才可以做主语,而且又是被动,所以是being done的结构

Plenty of fresh air and proper exercises _____________ good Let us go out for a （） of fresh air.A.breath B.breaths C.br 英语作文The importance of fresh air People need plenty of fresh fruits and vegetables every day. IS the air fresh or clean go your city? take a breath of ___ fresh air A ,the B ,\ Breathing fresh air does you a lot of 英语 As well as __________ the fresh air,we enjoyed the beauti enjoy the fresh air Let the Fresh Air Eating plenty of fresh fruit and vegetables will help you st 1.We need plenty of fresh fruit every day.改否定句

高中英语2929._________________ plenty of fresh air __________ go

高中英语2929._______ plenty of fresh air go