11.　　 They were both in first place.

10.　　 Class 3 was as fast as Class 1.

9.at the same time

8.be neck and neck

7.catch up with… / fall behind…

6.pass the stick on (to sb.) / pass it on (to sb.)

5.On/at the first lap　 at the end of the first lap

4.Ready? Go!

3.stand at the starting / finishing line

2.a relay race / a team race