1. Tom had lunch at school yesterday. (改为否定句)
    Tom ______ ______ lunch at school yesterday.
2. The boys are flying kites in the park now. (就画线部分提问) 
    ______ are the boys ______ in the park now?
3. She does well in singing and dancing. (改为同义句)
    She is ______ ______ singing and dancing.
4. Lucy hasn't traveled by sea. Lily hasn't, either. (合并为一句简单句) 
    ______ Lucy ______ Lily has traveled by sea.
5. You mustn't play jokes in the reading room. (改为祈使句)
    ______ ______ jokes in the reading room.

     It's Sunday morning. My mother and I are going to Beihai Park. There are many people in the park. 
Some women are sitting on the grass. They're talking. Two girls are playing games near them. Three 
old men are standing under a big tree. They are watching the children. There's a river over there. Many 
young people are singing and dancing near it. 

(     )1. There aren't many people in the park.
(     )2. Some old people are running. 
(     )3. Some children are flying kites in the park.
(     )4. Three old men are watching the children. 
(     )5. Many young people are having a good time.