Впишите - S та, где это нужно.
1.a boy..... dive.......
2.boys......dive......
3.a girl.....ski......
4.girl......ski.....
5.worker...make...
6.a worker...make...
7.a bear...run...
8.two bear... run...
9.a frog... jump...
10.frog...jump...
11.two pupil...sing...
12.that pupil...sing...
13.this pupil... dance...
14.these pupil... dance...
15.those pupil... play...
16.this worker... make...
17.monkey... like...
18.these monkey... like...
19.that monkey... like...
20.that farmer... work...