MODULE 13- Đại từ nhân xưng, Đại từ sở hữu và Đại từ phản thân
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They said that they ________ their parents to repaint the house at 10 o’clock the previous day. A. had helped B. was helping C. have been helping d. had been helping

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They said that they ________ their parents to repaint the house at 10 o’clock the previous day.

had helped

was helping

have been helping

had been helping

Giải thích

Chọn đáp án D