问题描述:
I exercise twice a week.对划线部分提问,划线部分是twice
I exercise twice a week.对划线部分提问,划线部分是twice
______ ______ ______ do you______ a week.
I exercise twice a week.对划线部分提问,划线部分是twice
______ ______ ______ do you______ a week.
问题解答:
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