问题
I’m ______ duty today. I must clean the classroom ______school. [ ]
A: after; on
B: in; before
C: on; after
D:for; in
B: in; before
C: on; after
D:for; in
正确答案是:
同类题型
This hat is too cold. Why not __________ buying a new one?
How do you study _______ a test?[ ]
What is ______ month of the year ? —It’s December .
Do you know Tom?—Sure, we have ______in the same village for many years.
What is your math teacher like, Nick?-She is very kind _________ she looks a little serious.