Choose the best answer.
While he was doing homework, his sister _______(learn) English.
A. didn’t learned
B. was being learned
C. learned
D. was learning
Giải bởi Vietjack
Công thức: while + S was/were + V-ing, S was/were + V-ing
=>While he was doing homework, his sister was learning English.
Tạm dịch: Trong khi anh ấy đang làm bài tập về nhà thì chị gái anh ấy đang học tiếng Anh.
Đáp án cần chọn là: D
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Choose the best answer.
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