MODULE 9 - Đại từ nhân xưng, Đại từ sở hữu và Đại từ phản thân
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I ________ there once a long time ago and ________ back since. A. went / have not been B. have gone / will not be C. was going / am not D. had gone / was not

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I ________ there once a long time ago and ________ back since.

went / have not been

have gone / will not be

was going / am not

had gone / was not

Giải thích

Chọn đáp án A