Giải thích các bước giải :
1 . What are Mai and Hoa doing at the moment ?
2 . What do Tuan and his friends often do in the afternoon ?
3 . When does Tom usually listen to radio ?
4 . How many kilos of rice do they buy today
5 . Where is between the post office and the field
6 . How many kilometer from your house to school ?
7 . How old will Lan Anh be on her next birthday
8 . How many times a week does Ha go to school ?
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