1)
1 are playing
2 were playing
3 is sleeping
4 were sleeping
5 isn’t doing; were playing
6 weren’t do; were playing
7 Are you eating
8 Did you eating
2)
1 theirs
2 it’s
3 ours
4 mine
5 hers
6 his
3)1 someone
2 anything
3 something
4 someone
5 something
6 nothing