The boy __English on the radio when I __ his door.A.was learning,opened B.is learning ,opened
问题描述:
The boy __English on the radio when I __ his door.A.was learning,opened B.is learning ,opened
我觉得两个都可以,究竟改选哪个呀?
答
A 两个讲的都是过去的事才对啊