3. collect 226 stamps______________________________

2. raise money______________________________

1. collect shells______________________________

5.　　　　　 does it take you to do your homework?　　　　　　 two hours

4.　　　　　 has she been collecting shells?　　　　　 she was young.

3. __________did you skate?　　　　　 10 years ago

2.　　　　　 have they been singing?　　　　　 they were twelve years old.

1.　　　　　　 has he been skating?　　　　　　　 nine hours

　　 1.　 When I was eleven.

　　 2.　 Ye Lan.　 What sport do you play?

　　 3.　 Tennis.

　　 4.　 So how long have you been skating?

　　 5.　 When did you begin to play it?

　　 6.　 Three and a half years.

　　 正确的顺序为__________________________.