1. Let's ____________ (stop) the car.
2. Don't ____________ (worry). I can help you.
3. I can find it ____________ (easy).
4. How many ____________ (knife) do you have? What do the man' s parents want him to be? A．A teacher．B．An engineer．      C．A doctor．
5. ____________ (not do) your home work now.
6. He ____________ (show) me his photo now.
7. The boat ____________ (cross) the river a moment ago.

A: __1__ buy a New Year __2__  for our grandparents.
B: Why don't we__3_ one?
A: Good __4__. But I don't know how to make a card.  .
B: Let me show you how to do it. __5__ some trees and flowers __6__.
A: And then __7__"Happy New Year" on it.
B: Don't forget to write "Dear Grandma and Grandpa".
A: All right.

        A teacher often tells his students thinking is very important (重要的). He tells them when they want to 
say something, they should think first.            
        And he also tells them how to do it. He says, "Let me show you the way to do it. Before you want to say 
something important, you count (数数)  from one to fifty. If you have something very important to say, then 
you count from one to one hundred."             
        One day, he stands in the front of the class. There is a stove (炉子) behind him. When he is speaking, he 
finds some students saying something quietly.              
        Suddenly all the students shout, "Ninety-eight, ninety-nine, one hundred. Your coat is on fire,
sir!"            
        The teacher often tells his students          is very important. He tells them          they want to say 
something, they should          first.          
         He also tells them          to do it. One day, he          in front of the class. There is a          behind him. 
When he is          , he finds some students saying something          .           
         Finally, the teacher's coat is                     .