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

Answer 2

1. Can you dance well? - Oh? No, I can't dance very well.
2. Can I open the window? - No, you may not, it's cold.
3. Kevin, you must be friendly with your brother!
4. Olga must take her medicine every day because she's ill.
5. Girls, you mustn't be late for school.