If better use is ________ your spare time，you’ll make good progress in doing your business.

They had a wonderful time at the party.They ate and ate until no food remained on the table.

Many people who were once _____ now get better jobs after further education[ ]

Is this the reason ______he explained atthe meeting for his carelessness in his work

If you want to ________ the narrow hutong of old Beijing, tricycles are worth ________.