Modal Verbs - Extra or Missing Words

Which of these sentences has an extra or missing word? Look carefully at how the modal verbs are used.

1. "I can't to see you tonight, Brad," she said, tears in her eyes.
Correct
Not Correct

2. If you must play your music so loud, close the door!
Correct
Not Correct

3. The mayor told the crowd he had resign, that it was the right thing to do.
Correct
Not Correct

4. In golf, the rules say you shouldn't to pick up your ball without very good reason.
Correct
Not Correct

5. Hannah was told she had to stay at school late because of her bad behavior.
Correct
Not Correct

6. We may go to the Bahamas for our next vacation. We will think about it.
Correct
Not Correct

7. I'd love to have a look at your new phone. May?
Correct
Not Correct

8. Why are you smoking again? You know you shouldn't to after what your doctor said.
Correct
Not Correct