V . Fill in the blanks with proper prepositions. (介词填空) (10%) 1. ______ the long term , you will learn a lot from his speech on how to be a good teacher.. 2. Don’t you think it is a waste ______ time ? 3 When I came into his bedroom , everything is _____ a mess. 4 About 20% percent of the old people in this area suffer ______ heart disease.. 5 Today Internet games are popular ______ many teenagers. 6 After you leave our school ,you should know how to fit ______ society in the future. 7 He has been in hospital for about three weeks. Now he has recovered ______ his illness. 8 My efforts to save money ended _______ failure. 9 ______ a matter of fact, I want to have a good rest after a tiring day. 10 The government should take actions to deal_____ the pollution problems.