Choose the right version for each sentence.

1. b) am looking 2. c) until 3. c) the shortest 4. b) needn’t 5. b) was having 6. a) must 7. c) whether 8. c) nothing 9. a) get 10. c) more expensive 11. a) had to 12. b) was shocked 13. b) whose 14. d) at