Don't Have to and Mustn't Exercise at Auto-English

1	Sally! You ___________ say rude words like that!
2	Tommy! You ___________ pick your nose in class. It's really disgusting.
3	You ___________ finish the exercise now. You can finish it at home.
4	James ___________ go to church if he doesn't want to.
5	You ___________ drive so aggressively. You'll end up killing someone.
6	Helen ___________ make racist comments. It makes her seem really ignorant.
7	David ___________ answer your emails. There's no law about it.
8	It's OK. You ___________ pay now. You can pay me at the end of the month.
9	You ___________ stay out so late without ringing me. I was worried sick.
10	You ___________ let the cats sleep on my clean shirts. Look. They're covered in hairs.
11	You ___________ have lunch with my parents. I'm not forcing you.
12	I ___________ forget to phone Granny. It's her birthday tomorrow.