500 Câu trắc nghiệm ngữ pháp Tiếng Anh có đáp án - Phần 7
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Glenda…………..extremely hard when she was a student

6/25

Glenda…………..extremely hard when she was a student.

worked

has worked

was working

had been worked

Giải thích

Chọn đáp án A

Thì quá khứ đơn.