Q40. My father went to work by car some years ago, but now he goes by bus. (used to) * 1 điểm A. My father used to go to work by car, but now he go by bus. B. My father used go to work by car, but now he goes by bus. C. My father used to go to work by car, but now he goes by bus. D. My father used to go on work by car, but now he goes by bus.

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