19. It would be far better if collectors could be persuaded to spend their time and money in support of?____? archaeological research.?
A. literalB. legitimateC. legislativeD. illicit?
20. One of the effects of acid rain is that it causes plants to ?____?.?
A. contractB. shrinkC. thriveD. wither?
21. New products are sometimes given away in small quantities called ?______?.?
A. examplesB. samplesC. patternsD. proofs?
22. They sold their house for only $12,000, so the buyer got a good ?______?.?
A. tradeB. businessC. dealD. bargain?
23. If you want to see the bus schedule, please ?____? at the office.?
A. requireB. inquireC. requestD. acquire?
24. The ship’s captain and members of the ?____? welcomed us on board.?
A. crewB. staffC. teamD. group?
25. When Nancy paid the bill, she was given a ?____? for her money.?
A. ticketB. chequeC. tipD. receipt