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17.____alltheinventionshaveincommonis____theyhavesucceeded.A.What;whatB.That;thatC.what;thatD.That;what答案是C没有疑问,什么从句?
题目内容：
17.____all the inventions have in common is ____they have succeeded.
A.What; what B.That; that C.what; that D.That ; what
答案是C没有疑问,什么从句?优质解答
What all the inventions have in common中的What引导的是主语从句,而后面的they have succeeded做的是表语只能用that引导~~
A.What; what B.That; that C.what; that D.That ; what
答案是C没有疑问,什么从句?
优质解答
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