easy grammar needn't have done,didn't need to

1. You __________ brought a gift; it wasn't a birthday party.
2. She __________ wake up early since her meeting was canceled.
3. He __________ paid for the tickets; they were free.
4. They __________ worried about being late; the concert started an hour late.
5. I __________ call the doctor; I felt better the next day.
6. You __________ done all the work yourself; we could have helped.
7. She __________ worry about the exam; she passed with flying colors.
8. We __________ printed the documents; the meeting was postponed.
9. He __________ apologize; she wasn't offended.
10. You __________ buy so much food; we already had enough at home.
11. She __________ gone to the store; we already had milk.
12. They __________ rush; the train was delayed.
13. We __________ dress formally; the event was casual.
14. I __________ bought a new dress; the party was canceled.
15. He __________ bring an umbrella; it didn't rain after all.
16. You __________ cooked such a large meal; there were only a few guests.
17. They __________ taken a taxi; the bus arrived on time.
18. He __________ called her; she was already on her way.
19. They __________ book a hotel; their friends offered them a place to stay.
20. She __________ cleaned the house; the guests never showed up.

Answers:

1. needn't have
2. didn't need to
3. needn't have
4. needn't have
5. didn't need to
6. needn't have
7. didn't need to
8. needn't have
9. didn't need to
10. didn't need to
11. needn't have
12. didn't need to
13. didn't need to
14. needn't have
15. didn't need to
16. needn't have
17. needn't have
18. needn't have
19. didn't need to
20. didn't need to