---How can you keep slim as a mother of two sons?---I _______ in the gym for years.
40. —Shall Tom go and play football? —Not ________ he has finished his homework.
39. Was ________ Bill, ________ played basketball very well, ________ helped you repair your bike?
38. —You've left the light on. —Oh, ________. I'll go and turn it off.
37. No one can be sure ________ in a million years.
36. Somehow the news ________ that Liu Xiang was in the hotel, and a crowd gathered outside in the hope of seeing him.