Dat cau hoi voi tu in dam:
1)They are going to go camping by coach
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2)She bought a car to take her children to children
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3)It usually takes me 15 minutes to go to the market
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4)My sister will stay with Nam and Hoa in Hue
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5)I can not visit you because I am very busy
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6)My sister could write when she was a year old
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7)Hoa gave me a new book yesterday
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