用正确的介词填空
1.many things are ___sale.
2.you can buy this coat___ a good price.
3.my mother buys these things____ only 15 dollars.
4.please come____ Mr Cool's clothes store.
5.we have an english contest___ our school
6.the blue pen is green.what___ the ruler?
it's black and white.
7.she can learn chinese histort___beijing opera
8.do you want to go out___ me?
9.i want to ask my teacher____an english book.
10.____ girls,we have clothes in red and white.