Read the following passage and choose the best answer for each blank:                                                  EARTHWATCH      Have you ever wanted (1)__________ something different? Five years ago, Will Slade read (2)________ an organisation called Earthwatch. Earthwatch (3)_______ volunteers for expeditions to study and explore different parts (4)_________ the world.      Will decided (5)___________ an expedition to study elephants in Africa. "I wasn't sure about it before I went," says Will. "But in fact, I really enjoyed every minute of the expedition. We slept in tents and we cooked our own food, but it was great to see the elephants and all the other animals there". "I've (6)_______ all the expeditions, and I've seen (7)__________ fantastic places. How many people (8)_________ slept on a beach, climbed a mountain, or seen a whale? This world (9)___________ such a beautiful place, but it's disappearing fast. We have to (10)__________  more about it if we're going to save it."   1. A. do                     B. to do                     C. doing                       D. did 2. A. about                B. on                         C. at                             D. in 3. A. find                   B. to find                    C. finding                     D. finds 4. A. in                      B. of                           C. on                            D. at 5. A. join                   B. to join                    C. joining                     D. joined 6. A. enjoy                B. enjoying                 C. enjoyed                  D. to enjoy 7. A. a                       B. some                      C. any                         D. much 8. A. have                 B. has                         C. having                    D. had 9. A. are                    B. was                        C. is                            D. were 10. A. give                B. do                           C. learn                       D. tell