Part V:
26. problem
27. benefit
28. millions
29. employment
30. reduced
31. engineers
32. complicated
33. polluting
Part VI
34. If you don't hurry, you will be late.
35. Ha asked if Tim would play soccer with his classmates the next day.
36. It is interesting to learn English.
37. The questions haven't been answered yet.
38. I suggest taking a train is a good idea.
