_____ is troubling me is _____ I don't understand _____ he s
_____ is troubling me is _____ I don't understand _____ he said A;What; that; what; B. What; what; what C. That; that; what D. Why; that; which 帮忙讲解下这道题目?
你好,很高兴为你解答 _____ is troubling me is _____ I don't understand _____ he said A;What; that; what; B. What; what; what C. That; that; what D. Why; that; which