5000 câu trắc nghiệm Tiếng Anh 9 có đáp án - Phần 5
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My girls friend arrived after I ________ for her about half an hour. a. was waiting b. had been

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My girls friend arrived after I ________ for her about half an hour.

was waiting

had been waiting

has been waiting

have waited

Giải thích

Chọn đáp án B