3
1 are you doing
2 am sitting
3 is watching
4 is checking
5 is doing
6 is walking, is going
4
1 usually go
2 does he speak
3 're working
4 do you prefer
5 does she want
6 are you studying
7 works
5
1 go
2 moment
3 listen
4 same
5 take
6 has
7 верно составлено предложение
8 these