题目内容
I've waited _________an hour and now I'm leaving.
[ ]
A .since |
B .in |
C .at |
D .for |
答案:D
练习册系列答案
相关题目
题目内容
I've waited _________an hour and now I'm leaving.
[ ]
A .since |
B .in |
C .at |
D .for |