问题
选择题
— 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
答案
答案：B
本题根据语境看判断是一般过去时，故选B
搜题请搜索小程序“爱下问搜题”
— 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
答案：B
本题根据语境看判断是一般过去时，故选B