20. ________ your next high-adventure trip is scheduled, start preparing now.
A. In case B. Unless C. Only if D. Whenever
19. Your ideas are very interesting, but we need suggestions to get us out of the mess.
A. impressive B. similar C. practical D. traditional
18. Donald doesn’t have much patience - he often loses his _______.
A. courage B. mind C. balance D. temper
17. I ________ to the lecture this afternoon, but I ________ a bit ill.
A. should have gone; was B. would have gone; had been
C. should go; was D. would go; had been
16. - I phoned you at 7 yesterday evening but nobody answered.
- Oh, I ________ my dog in the park then.
A. walked B. was walking C. had walked D. would walk