IV. Choose the best word or phrase (A, B, c or D) to complete each sentence. 16. The weather is very hot in _____. You can see camels and rattlesnakes easily there. A. valley B. ocean C. desert D. mountain 17. Cam Ly _____ in Lam Dong Province attracts many tourists to visit each year. A. Island B. Waterfall C. Highland D. Forest 18. My sister had a headache yesterday when she returned from her camping. My mother gave her some _____ to reduce it. A. painkillers B.plaster C. sun cream D. cool water 19. My brother and I wear _____ to move conveniently when we go hiking in the mountain. A. walking boots B. scissors C. backpacks D. waterproof coat 20. We brought a _____ to look around when we move in the jungle in the dark. A. tent B. mobile phone C. sun hat D. torch 21. I had an occasion to come to visit Ngu Hanh Son. It’s a mountain in _____ Da Nang. A. land B. range C. mount D. rock 22. Those islands in Nha Trang are named _____ some interesting animals such as monkeys or swiftlets. A. around B. In C. after D. by 23. It is ______to check your luggage carefully when you travel somewhere by plane. A. unusual B. attractive C. essential D. exciting 24. Ba Be Lake in Bac Kan is _____ natural lake in Viet Nam. A. the largest B. the large C. largest D. more large 25. Many people say that Nile is_____ river in the world A. the deepest B. deeper C. the longest D. longer 26. I think Nam is one of ____ tour guides in this company A. the best B. the better C. best D. better 27. What is________mountain in Viet Nam? - I think it's Fansipan A. the height B. the highest C. the higher D. highest 28. We _____ get up early to be at the campsite in time A. can B. must C. can’t D. mustn't 29. You _____ throw the rubbish into the West Lake A. may B. must C. mustn't D. may not 30. We _____ hold a party tonight but we ______ some loud noises affecting our neighbors. A. must/mustn't B. mustn't/must C. can/must D. can/mustn’t