— When you to learn to ride your bike？ — I really can’t remember the time.A. do; beginB.

发布时间：2020-08-21 08:19:57

— When      you      to learn to ride your bike？
— I really can’t remember the time.
A. do; begin
B. did; begin
C. have; begun
D. had; begun

网友回答

A. do; begin
(答案→)B. did; begin
C. have; begun
D. had; begun
解析：本题根据语境看判断是一般过去时，故选B
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