1. Так и остаётся
2.he doesn't help
3 I am writing
4 l am not writing
5they are playing
6they are not playing
7Are they playing
8 helps
9 is he helping
10 I don't read
11 do you go
12 my father doesn't work
13 he works
14 is he sleeping
15 we don't go
16 my sister is eating
17 she isn't eating
18так и остаётся
19 they don't go
20 my friend doesn't like
21 I am not reading