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This is a difficult problem. I wish I _________ the answer.

This is a difficult problem. I wish I _________ the answer.

Câu hỏi

Nhận biết

This is a difficult problem. I wish I _________ the answer.


A.
know
B.
knew
C.
had known
D.
have known
Đáp án đúng: B

Lời giải của Luyện Tập 365

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