PRACTICE TEST 7- Đại từ nhân xưng, Đại từ sở hữu và Đại từ phản thân
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The customers ______ the company before our boss ______ A. was leaving / arrive B. already left / have arrived C. has been left / were arriving D. had left / arrived

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The customers ______ the company before our boss ______

was leaving / arrive

already left / have arrived

has been left / were arriving

had left / arrived

Giải thích

Chọn đáp án D