I arrived at the airport ________ the plane had taken off.

- Mom, shall we have dinner now? - No, we don’t have dinner _____ your father comes back.

Basketball has a history of nearly 300 years. Today it is still loved by______ the young___the old.

--- What would you like to drink, coffee or orange juice?---      . Please give me a cup of tea.

In the past, there was _______library ______hospital in my hometown.