2.

- I was not writing an exercise now.

? was i writing an exercise now

3.сори,не понимаю какое время

4.

+ we dance every day

? Do we dance every day?

5.

+ they are playing in the room now

- they are not playing in the room now

6.

- he doesn't live in the village

?Does he live in the village?

7.

+ he is sleeping now

- he is not sleeping now

скорее всего так..