1. My hometown _________ (change) a lot since I was 8 years old.
2. Noise pollution _________ (be) also a big problem now.
3. They will go _________ (boat) tomorrow.
4. Ben ________ (clap) his hands while the performers were marching across the park.
5. I saw Lily ________ (fly) the kite in the park at 10 this morning.
6. It's highly possible that I'll go fishing instead of ________ (swim).
7. You use this set of keys for _________ (type).
8. I ________ (tell) that there would be a meeting the next week.
9. Miss Gao said that the Red Cross ________ (start) in 1863.
10. It is necessary for you _________ (walk) the dog in the park once a day.

1.The poor little boy coughed the whole night. (对画线部分提问)
   _____ _____ _____ the poor little boy cough?
2. I was three years old when I started doing things. (同上)
    _____ _____ _____  you when you started doing things?
3. My mother bought something at the supermarket. (改为一般疑问句)
    _____ your mother_____ _____  at the supemarket?
4. She toured the U.S. when she was fourteen. (对画线部分提问)
     _____ _____ she tour the U.S.?
5. Helen found the kite in the box.(同上)
    _____ found the kite in the box?

1. Jim found the lost child in the park.（改为被动语态）     
The lost child                         by Jim in the park.
2. The kite was made by my grandfather.（就画线部分提问） 
           was the kite made            ?
3. The computer was invented in 1976.（就画线部分提问）
                       the computer invented?
4. The knife is used for cutting things.（就画线部分提问）
           is the knife used            ?
5. Is the song sung by Sun Nan?（改为主动语态）
           Sun Nan            the song?
6. I think the computer is the most useful invention.（就画线部分提问）
                       you think            the most useful invention？
7. The microwave oven is used for cooking food. （改为同意句）
The microwave oven is used                        food.

1. Jim is often seen to be made             __    (stay)behind after schoo1.
2. It was raining hard when he_____ (arrive)home.
3. Because I            ____ (lose)my bicycle,I have to walk to school.
4. The singer,together with her family,           ____  (1eave)Paris for Hong Kong soon,isn't she?
5. She won't go to the cinema if she             _____ (not finish)the work tomorrow.
6. It's not a good way to educate children by_____ (punish)them.
7. I saw Lily ____(fly) the kite in the park at 10 this morning.
8. —Are you going to Terry's birthday party?
    —Yes, I will if I          ____(invite).
9. Miss Gao said that the Red Cross  ____(start) in 1863.
10. It is necessary for you            _____(walk) the dog in the park once a day.