单项选择题

A．running
B．runs
C．is running
D．was running
<上一题 目录 下一题>
热门 试题

填空题
The author took his son to the doctor because he had broken
单项选择题
A．had been workingB．have been workingC．workedD．have worked
A．had been working
B．have been working
C．worked
D．have worked
相关试题