33. How long is it since you have moved into your new house?
34. Jessica doesn't swim as well as Sarah.
35. The darker it got, the harder we could see.
36. We were rather impressed by the children's performance.
37. The countryside does not suffer from as much pollution as the city.
38. Soil poisoning is getting severe because farmers use too much pesticides and herbicides.
39. The spaceship will not launch until the do a final check.
40. Some people still believe that the world's resources can never be used up.
