21.　　 All the runners get ready to run / for the race.

Lesson 87

20.　　 be not fast enough

19.　　 quickly get up

18.　　 He ran much faster than the other boys/any other boy.

He ran fastest of all the boys.

17.　　 come on

16.　　 drop the stick on the ground

15.　　 the Class 3 runner / the runner from Class 3

14.　　 go on doing sth. / go on to do sth./ go on with sth.

13.　　 a moment later = after a moment

12.　　 be (not) far behind