1. 观察：如图，是某体育馆为了方便不同需求的观众，

该体育馆设计了多种形式的台阶.

27.　 If you have finished your homework, you could help with cleaning and cooking.　

26.　 Be careful to look both ways before you cross the street.　

25.　 I’m going to look through the newspaper for a holiday job.　

24.　 The traffic is very busy at this time.　

23.　 I’ll think of you as we watch the Black Socks win the game.　

22.　 Thanks for the tickets for next week’s game.I’m really happy to have the tickets.　

21.　 Friends like you make it a lot easier to get along in a new place.　

20.　 I was having a hard time finding it until you came along.　

19.　 The video you showed was really fun.