7. Don’t _______________ in their argument.

6. Is the book worth _______________?

5. He _______________ to us how to use the computer.

4. You can ______________ my office a t any time, if you like.

3. It’s too late to go outside. _______________, it’s beginning to rain.

2. Huang Shiren shouted at Yang Bailao, “You must _______________ all your debts before

　 the end of the year.

1. He dressed up as a cowboy, but I still _______________ him at first sight.

13. Each time we celebrate a festival it changes a little and in that we _____ our culture _____.

12. - _______________, we should make a decision as soon as possible.　 – I don’t agree.

11. If a person is _______________, he or she is called “April fool!”.