A. polluted B. polluting C. pollution D. pollutant 25. You are.......to clean the bathroom. A. declared B. imagined C. supposed D. supposing 26. No mistakes.......made. A. has been B. have been C. is D. to be 27. I don't mind.......waiting for a few minutes. A. to be kept B. keeping C. being kept D. being 28. It is.......that Mr Can Chinh Truong retired in October, 2014. A. known B. told C. knowing D. spoken 29. Sheila is understood.......won the first prize. A. having B. to having C. to has D. to have 30. The new motorway.......and built last year. A. planned B. was planned C. was planning D. had planned 31. The photos.......in a London studio last week. A. were taken B. have taken C. was taken D. have been taken 32. He is known.......a man who keeps his word. A. for B. as C. in D. at 33. Western doctors.......Chinese hospitals have been startled to see patients.......serious operations without a conventional anesthetic. A. that visit - underwent B. visited – undergoing C. visiting - undergoing D. which have visited - undergoing 34. The trade talks which had begun between the two countries were......when the war began. A. broken down B. broken in C. broken off D. broken out 35. Bread is usually.......wheat. A. made of B. made with C. made by D. made from Fill in each numbered blank with one suitable word or phrase: Conservation, sustainable use and protection of (36) _______ resources including plants, animals, mineral deposits, soils, clean (37) _______, clean air, and fossil fuels such as coal, petroleum, and natural gas. Natural (38) _______ are grouped into two categories, renewable and nonrenewable. A (39) _______ resource is one that may be replaced over time by natural processes, (40) _______ fish populations or natural vegetation, or is inexhaustible, such as (41) _______ energy. The goal of renewable resource conservation is to ensure (42) _______ such resources are not consumed faster than they are (43) _______. Nonrenewable resources are those in limited supply that cannot be replaced (44) ______ can be replaced only over extremely long (45) _______ of time. Nonrenewable resources include fossil fuels and mineral deposits, such as (46) _______ ore and gold ore. Conservation activities for nonrenewable resources focus (47) _______ maintaining an adequate supply of these resources well into the future. Natural resources are conserved for their biological, economic, and recreational values, (48) _______ their natural beauty and importance to local cultures. (49) _______, tropical rain forests are protected for their important role in both global ecology and the economic livelihood of the local culture; a coral reef may be (50) _______ for its recreational value for scuba divers; and a scenic river may be protected for its natural beauty.... 36. A. national B. international C. natural D. lively 37. A. lakes B. stones C. sand D. water 38. A. resources B. gases C. fuels D. plants 39. A. renewable B. nonrenewable C. new D. modern 40. A. such B. such as C. as D. like 41. A. solar B. earthly C. lunar D. polar 42. A. it B. which C. that D. what 43. A. installed B. put C. placed D. replaced 44. A. and B. but C. or D. so 45. A. ways B. periods C. spaces D. steps 46. A. iron B. water C. metal D. gold 47. A. in B. on C. at D. by 48. A. like B. also C. and D. as well as 49. A. However B. Nevertheless C. For example D. In fact 50. A. killed B. protected C. fed D. left