问题

I usually play computer games _____ weekends.
A:at
B:on
C:in
D:for;
B:on
C:in
D:for;
正确答案是:
同类题型
So many problems! I’m tired.—You should try tothem by yourself. You are not a child any longer.
It’s burning hot today, isn’t it? —Yes._____ yesterday. [ ]
Alice’s father always brings her a nice gift ________ he returns home from his business trip.
It was desired that the project ______ before the end of this month.