17.I have been skating nine o’clock. A.for B.since C.at D.from 查看更多

 

题目列表(包括答案和解析)

-Alison, how long have you been skating?

-I have been skating ________ nine o’clock.

[  ]

A.for

B.at

C.since

D.from

查看答案和解析>>


同步练习册答案