Вопрос по английскому языку:

Вставьте вместо вопросов should или shouldn't?
1)The kids spend so much time in front of the TV.
2) You ? be so selfish.
3) He ? hurry to school.It's 7.55!
4) You ? exercise more.
5) You are overweight. You ? go on a diet.
6) Your room is really messy, you ? tidy it immediately.


Заранее спасибо!