`V`. Give the correct word form.

`36` - pollution

`37` - environmental

`38` - personal

`39` - psychological

`40` - Exploitation

`VI`. Give the correct form of verbs.

`41` - do

`42` - to come

`43` - standing

`VII`. Rewrite these sentences.

`44` - Their complaints should be sent to the main office.

`45` - Mr Phong who is supposed to be at the meeting, hasn't come yet.

`46` - Hanoi is as big as Tokyo.

`47` - If I had his address, I could write letter to him.

`48` - Brenda said they had to go to the hospital then.

`49` - She told me if I met my grandfather, please sent her regards to him.

`50` - As for transportation, ecotourists might prefer a biking or walking tour to a bus tour which may contribute to air pollution.

V. Give the correct word form.

36. Air pollution is a consequence of fossil fuel burning by motor vehicles, factories, aircraft and rockets. (pollute)

37. In some national parks, tourists are not fully aware of environmental protection. (environment)

38. Don't ask him questions about his family. He hates answering personal questions. (person)

39. Noise pollution can cause stress and psychological and health problems for human. (psychology)

40. Exploitation of oil will lead to the depletion of this natural resource. (exploit)

VI. Give the correct form of verbs.

41. We always (do) do our exercises carefully.

42-43. Ask her (come) to come in and don't keep her (stand) standing.

VII. Rewrite these sentences.

44. People should send their complaints to the main office.

⇒ Their complaints should be sent to the main office.

45. Mr Phong hasn't come yet. He is supposed to be at the meeting.

⇒ Mr Phong who is supposed to be at the meeting, hasn't come yet.

46. Tokyo is bigger than Hanoi.

⇒ Hanoi isn't as big as Tokyo.

47. I don't have his address so I can't write letter to him.

⇒ If I had his address, I could write letter to him.

48. "They must go to the hospital now."

⇒ Brenda said they had to go to the hospital then.

49. "If you meet your grandfather, please send my regards to him."

⇒ She told me if I met my grandfather, please sent her regards to him.

VIII. Put the words in the right order to make meaningful sentences.

50. pollution/ tour/ for/ eco-tourists/ which/ air/ bus/ as/ might/ to/ a/ prefer/ transportation/ may/ a/ tour/ or/ biking/ to/contribute/ walking.

⇒ As for transportation, ecotourists might prefer a biking or walking tour to a bus tour which may contribute to air pollution.