问题
I usually do some cleaning ____ Sunday morning.[ ]
A: in
B: at
C: on
D:to
B: at
C: on
D:to
正确答案是：
同类题型
Their school has more than two _____ teachers and _____ students.
We all know that Mary __Chinese better than Maria. [ ]
Do you know the _________about the writer? ———-Yes, he has _________for 2years.
Even if we are very busy, we should spend ______ doing exercise every day.
He told me that he ______ never ______ such a good film before.