问题

What did you do ______ your last day off? —I took my dog ______ a walk.[ ]
A: in; for
B: on; for
C: on; as
D:at; on
B: on; for
C: on; as
D:at; on
正确答案是:
同类题型
They develop their skills _________ they can do things better and better.
What are you going to do this weekend ? —— I ______ yet .
Do you know ______ this dictionary belongs to? — Let me see. Oh, it’s _______.
Did you see the film last night? — Yes, I have never seen ____exciting film before.
Basketball is the most popular game in America.—____ in China. [ ]