问题

Let me think ____ it. The question is kind of difficult.[ ]
A: over
B: out
C: on
D:of
B: out
C: on
D:of
正确答案是:
同类题型
Harbin No.3 High school is___ school of wonders, ____ school which we students are proud of.
It’s a fine day today. Let’s play _____ soccer.
More and more students _________ too much homework and they are really tired of it.
The manager demanded that the report of the committee be printed without any.