10. Đặt câu hỏi cho phần gạch chân trong các câu dưới đây.
1. Tran was making a birthday cake for her grandmother.
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2. He found a silver coin when he was digging his garden.
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3. When you telephoned, I was looking after my sitster.
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4. They were talking with Huy’s wife.
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5. The kids were listening to the radio when I saw them.
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6. Vu was mowing the lawn while his wife was watering the trees.
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7. Tien was singing a folk song at this time yesterday.
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8. Dat was walking slowly when he was hit by a motorbike.
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.-. ờmmmmmmmmmmmmmmmmmmm
where :]?