You are going to read an article in which four readers suggest locations for watching wildlife. For questions 20-34, choose from the readers (A-D).

20. D (Amy mentions: "We made a small donation and asked to help") 21. D (Amy says: "It could be a life-changing experience") 22. C (Ray mentions: "Costa Rica's popularity as a wildlife venue could be about to take off") 23. A (Kevin says: "Hallo Bay would be a bit challenging if you'd never been wildlife watching before") 24. A (Kevin mentions: "your mouth definitely goes dry") 25. B (Sarah mentions: "work with lion, cheetah, sable antelope, elephant and buffalo") 26. D (Amy mentions: "if you don't spot your ultimate prey. It could be a life-changing experience, but it's not that likely to happen") 27. C (Ray mentions: "850 species of birds and a quarter of the world's species of butterfly") 28. B (Sarah mentions: "a selection of volunteer projects involving animals") 29. C (Ray mentions: "we waited two nights, napping on hard benches") 30. D (Amy mentions: "some of the best ways to view both is from the back of an elephant - something that is rather fabulous in itself") 31. A (Kevin mentions: "the bears at Hallo Bay don't associate humans with food as nobody's ever fed them, so they pose no risk to people") 32. B (Sarah mentions: "parks, such as Madikwe Game Reserve, that are malaria-free") 33. D (Amy mentions: "It was one of the most amazing animal encounters possible... all the more special as it was so impromptu") 34. B (Sarah says: "it's perfectly possible to fly in, hire a four-by-four... and head off on your own")