Choose the correct item.
15. We went to the beach yesterday, but it started to rain. We didn't ............
A take nice clothes
B have good time
C haven't got sun glasses
16. The government is trying to reduce ..... pollution.
A burn
B air
C noise
17. I saw a ..... at the cinema last night. It was very scary.
A thriller
B comedy
C documentary
18. If we continue to use too much plastic, ..... are going to be serious problems.
A will become
B will be
C are becoming
19. We should ... our holidays in advance to get cheaper tickets.
A book
B reserve
C order
20. I went to Barcelona last year and I really enjoyed .....
A there
B it
C myself
21. We can ............ on the beach tomorrow if the weather is nice.