单选Most environmental problems exist because adequate for preventing them __ takeen in the past.
单选Most environmental problems exist because adequate for preventing them __ takeen in the past.
A.was not B.were not being C.were not D.being not
答案怎么不是B?
A.was not B.were not being C.were not D.being not
答案怎么不是B?
英语人气：733 ℃时间：2020-02-04 06:03:34
优质解答
这句话的意思是：大多数环境污染问题的存在是因为充分预防措施在过去没有被重视.首先这个句子的重点是~预防措施没【被】重视,所以答案一定要体现【被动】句意是说污染问题还在是因为 【过去】防护措施 没被重视,而不...
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