Question

Fill in the necessary modal verbs can\ can`t, may\may not, must\mustn`t, to have to in the correct form ...1)...you dance well?-Oh? no. I...dnce very well.
2)... i open the window?-No? you ...its cold
3)Kevin, you... be friendly with your brother!
4)Olga ...take her medicine every day, because shes ill.
5)Girls, you.. be late for school.

Answer 1

1. can, can't
2.may, may not
3. must
4.must
5.mustn't