Exercise 2


Select the correct form of the modal verbs to complete these sentences. When you finish, click the “Check answers” button to see your result. You have one opportunity to answer correctly.

1. My sister ___ mop the floor to get permission to go out with her friends.
a) doesn’t have to
b) has to
Ok! It´s a duty.
Check it! It´s a duty.
2. You ___ touch those plants. They're poisonous.
a) mustn’t
b) must
Ok! It´s dangerous.
Check it! It´s dangerous.
3. There isn’t any milk left. I ___ buy some milk today.
a) must
b) mustn’t
Ok! It´s necessary
Check it! It´s necessary
4. She ___ tidy my room. I'll do it myself.
a) doesn’t have to
b) must
Ok! It´s not necessary.
Check it! It´s not necessary.

Check again! Check again! Check again! Very good!