题目内容
My grandmother used ________ in the morning.
A. go out for a walk
B. going out for a walk
C. to go out for a walk
D. went out for a walk
答案:C
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题目内容
My grandmother used ________ in the morning.
A. go out for a walk
B. going out for a walk
C. to go out for a walk
D. went out for a walk