The boy ______ blue trousers _______.

Is there a discount _____ last month’s coats?

Are you ________ homework ________ someone else?

I do not eat sweet snacks ________ meals.

Little Tom has got a lot of birthday presents, but he isn’t able to take all of them ___.

_________ the classmates’ help, we won the basketball final at last.

The day _____ the trip _____ Beijing finally arrived and we were all excited ______ it.

You can call me ____ 0510-82234567 or e-mail me _____lily@changshu.com.cn.

Can you see her _____ us _____ her yellow scarf over there?

—What do you use the box_____?
—I use it_____keep pencils,rulers,pens and so on.
A.to, to                  B.to, for                       C.for,  to