Утвердительном
1) they are going to school now
2) they go to school every morning
3) my mother is working now
4) my mother work at an office
Вопросительном
1) Are they going to school now?
2) Do they go to school every morning?
3) Is your mother working now?
4) Does your mother work at an office?
Отрицательном
1) They aren't going to school now
2) They don't go to school every morning
3) My mother isn't working now
4) My mother doesn't work at an office