The careless boy lost his key, _______ he had to wait for his mom in the cold.
---______ is the beef?----Sixty yuan a kilo. ______ would you like?
Shopping in supermarkets usually ______a lot of time.
Lucy is sending a letter to her parents. They will ______ it in five days.
Would you like to ______ 100 yuan for the watch?
Learning to sing English songs is a good ______ to learn English.