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It'simpossibleforachildtodosomuchworkwithinashortperiodoftime,______?a)isn'titb)isitc)hasitd)hasn'tit为什么是a?不是有impossible吗?
题目内容：
It's impossible for a child to do so much work within a short period of time,______?
a) isn't it b) is it c) has it d) hasn't it
为什么是a?不是有impossible吗?优质解答
a) isn't it
如果是通过加否定前缀表否定的,作肯定句看：
再如：
It is unimportant,isn't it?
比较：
It is not important,is it?
a) isn't it b) is it c) has it d) hasn't it
为什么是a?不是有impossible吗?
优质解答
如果是通过加否定前缀表否定的,作肯定句看：
再如：
It is unimportant,isn't it?
比较：
It is not important,is it?
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