Tổng hợp 20 đề thi Tiếng anh ôn thi vào 10 có đáp án - Đề 9
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__________, the examinees knew it was time to stop.

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__________, the examinees knew it was time to stop.


Hearing the bell

When heard the bell

To hear the bell

To have been heard the bell


Giải thích

Đáp án A