---Try to remember to turn off the light when you leave the room. ---I’m trying to expenses.
—I haven't seen Tom for years. Any news about him? —He __________ in a toy factory for two years. Now he is a farmer.
—That must have been a long trip. —Yeah, it __________ us a whole week to get there.
—Bob has gone to California. —Oh, can you tell me when he __________?
—I've got to go now. —Must you? I __________ you could stay for dinner with us.
I had been working on math for the whole afternoon and the numbers __________ before my eyes.