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It takes Hoa three hours doing her homework everyday.How many does it cost top send this letter to China?My father has less days off than Tim's father.Hoa playing the piano in her room at the moment.Does Nam's mother go always to work by bus?Who will give care of the house while we are away?The post office sells phone card apart of stamps.Because we have to be there in a hurry, we better take a taxi.