IV.
31. You're tired although-> because you stayed up too late to watch TV last night.
32. Tuan sighed sad-> sadly when he heard that he failed the test.
33. Don't speak english with him ; he hardly not know-> knows any English.
34. 90 percent of earthquakes occurs->occur around the Pacific Rim.
V.
35. Fuel consuming can be cut down by having fewer cars on the roads.
36. Many chemicals have a disastrous effect on the environment.
37. Luckily, the typhoon didn't cause any damage on the village.
38. The next stage in the development of television is interactive TV.
