问题
When does your mother go shopping?-Usually __________ Sunday mornings.[ ]
A: on
B: in
C: at
D:for
B: in
C: at
D:for
正确答案是：
同类题型
Let’s play________soccer!—I don’t have________soccer ball.
What about _____dictionary on the bookshelf? —It’s very useful ,I think.
The plane is leaving right now, but Jim hasn’t arrived yet. —Well, he said he _____here on time.
______ in the near future, vision-phones will come into wider use in our ____ life.