Multiple choice

It's finally Friday night! I'm so glad I ________ set my alarm for tomorrow.

  1. mustn't

  2. haven't to

  3. don't have to

  4. shouldn't

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The phrase 'don't have to' expresses a lack of obligation. Since it is Friday night and the speaker does not need to wake up early, this is the correct choice.