百度推广登录j:一道简单英语题

来源:百度文库 编辑:高校问答 时间:2024/07/07 08:59:40
The runner fell ( ) he quickly got up and went on running.

but

but,这里表示转折

The runner fell (downed, ) he quickly got up and went on running.

but

but

but不对。