Have you ever wanted to do something different? Five years ago, Will Slade read about (27) ______ organization called Earthwatch. Earthwatch finds volunteers (28) ______ expeditons (29) ______ and explore different parts of the world.

Will decided (30) ______ an expedition to study elephants in Africa. "I wasn't sure about it before I went." say Will. "But in fact, I really enjoyed every minute of the expedition. We slept (31) ______ tents and we cooked our own food, but it was the great (32) ______ elephants and all the other animals there". "I've (33) ______ all the expeditions, and I have seen some fantastic places. How (34) ______ people have slept (35) ______ a beach, climbed a mountain, or see a whale? This world is such a beautiful place, but it's disappearing fast. We have to learn more (36) ______ it if we are going to save it."

Question 27.A. a                       B. the                           C. an                     D. some

Question 28.A. to                      B. for                           C. at                      D. on

Question 29.A. studying           B. studied           C. study                D. to study

Question 30.A. to join               B. join                C. joining              D. joined

Question 31.A. on                     B. in                            C. at                      D. under

Question 32.A. see                    B. saw                C. seeing               D. to see

Question 33.A. enjoyed            B. enjoy              C. enjoying            D. to enjoy

Question 34.A. much                B. far                           C. many                D. long

Question 35.A. in                      B. on                           C. to                      D. above

Question 36.A. at                      B. in                            C. of                      D. about

Trên trang tính, tại ô A1 và B1 lần lượt nhập 5 và 10. Tại ô C1 nhập =A1+B1. Nếu sao chép nội dung ô C1 sang ô D1. Nháy chọn lại ô D1 trên thanh công thức hiển thị nội dung gì?

A. =A1+B1                      B. =A1+C1                    C. Không có nội dung    D. =B1+C1

Cuộc xâm lược của quân Minh và sự thất bại của nhà Hồ.