1.why not try to exercise to lose weight?
2.don't put off what you can do today till tomorrow.
3.nothing ccan prevent him from going there
4.be sure to turn off all the light before leaving the reading room.
5.the cmputers are playing an important part in the modern life.
6.pur class is made up of 20 boys and 25 girls.
7.we must mae full use of our time.
8.please raise the blackboard a little so that everybody can see
9.the old bookstre is 3 times larger than that old one.
10.we are pround of our great socialism motherland