一、1、are swimming
2、to visit
3、leaves
4、see
5、were
二、1、studied
2、talked
3、listen
4、rainy
5、play；didn't；visited
6、did；do；cleaned
7、Did；didn't；played
三、1、practiced the piano
2、were on；floor
3、putting；garbage
4、danced in；parade
5、used；computer
四、（A） 1、F 2、F 3、T 4、F
（B）1、It was February 14th.
2、Yes, she did.
3、Yes, they were.
4、She gave her a nice doll.
5、She played computer games with her friend Emma.
五、略