3. Circle the best option to complete the sentences.

1. She used to / has to / must to stay inside or she will pay a fine.

2. Alice wants to fly / fly / flying to a wonderland.

3. You needn't go / to go / going with us.

4. Would you like swim / to swim / swimming, Jane?

5. You ought to / had better not / should not work hard or you will fail the test.

6. We needn't / don't need / not need to hurry because we have much time.