Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có đầy đủ đáp án (Đề 3)

I am sure he didn’t know that his mother was seriously ill. He couldn’t possibly

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I am sure he didn’t know that his mother was seriously ill.

He couldn’t possibly.........................................................................................................................................................................

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Đáp án:

He couldn’t possibly have known that his mother was seriously ill.