.We won’t know how much food to buy until we decide how many people ________.
Dina,__________ for months to find a job as a waitress,finally took a position at a local advertising agency.
__________ in the queue for half an hour, the old man suddenly realized he had left the cheque in the car.
__________ at my classmates' faces, I read the same excitement in their eyes.
__________ is known to everybody , light travels faster than sound.
This kind of ancient book requires a great deal of .