4．For the past decades，great changes ________ (take)place in our hometown.

　　5．The heavy rain in the past few days has led the river ________(rise)rapidly.

　　6．During my summer vacation，I always spend lots of time ________(watch)movies at home.

　　7．Many people ________(interest)in sociology，but are not sure what it means.

　　8．It seems there is a trend for many retired people ________(move)to warm places.

　　答案　1. finding　2. Having failed　3. losing　4. have taken　5. to rise　6. watching　7. are interested　8. to move

Ⅲ. 完成句子

　　1．________________(随着越来越多的国家)begin to rely on industry than agriculture，their cities become industrialized.

　　2．________________(通过研究社会学)，we can identify important factors such as education that help make people more successful with a society.

　　3．Some people，________________(当他们富有时)，decide to spend holidays in the countryside or move there to retire.

4．To help further the fight against intellectual property theft，we should not buy ________________(盗版产品)．