I knew that she for someone A/is waiting B/has waiting C/has been waiting D/was waiting

1 câu trả lời

I knew that she has been waiting for someone

Cấu trúc : 

Khẳng định : S has/have +been + V-ing + O      

Phủ định : S has/have + Not +been + V-ing + O

`⇒ C`

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