1) Fill in the blanks using can or must.
a) I ________ study today because I have a test tomorrow.
b) My father ________ play basketball very well.
c) We ________ wash our clothes; they are very dirty.
d) My father ________ get up at seven every day because he works in the morning.
e) Joel ________ swim two kilometers.
2) Fill in the blanks using may or mustn't.
a) She is very young. She ________ go out in the evening.
b) They ________ arrive late. Their car is broken.
c) It ________ rain today.
d) My children ________ watch that film. Because I think that it is very violent.
e) THe party in my house starts at 9. Anybody ________ arrive there after 9.