Question

【题目】—Can you ride a bike?
—Sure. I ________ ride a bike when I was four years old.
A.was able to
B.could be to
C.am able to
D.can

Answer 1

【答案】A
【解析】句意：—你会骑车吗？—当然，我四岁就会骑车。A．was able to一般过去时态；B．could be to过去将来能；C．am able to一般现在时态；D．can一般现在时态。四岁时会做的事情，用一般过去时态。故选A。