题目内容
_____ troubles me is _____ I don’t know _____ is to be done with the new machine.
A. What; what; that B. What; that; how
C. What; that; what D. What; because; which
C
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题目内容
_____ troubles me is _____ I don’t know _____ is to be done with the new machine.
A. What; what; that B. What; that; how
C. What; that; what D. What; because; which