九年级英语练习几题、、求助!选择题：1、My parents_____the city lifr now.They on

九年级英语练习几题、、求助!
选择题：
1、My parents_____the city lifr now.They once lived in the country.
A. used to B.are used to C.use to D.are used
2、Many volunteers will________the Shanghai World EXPO in 2010.
A.attend B.join C.go to D.take part in
感谢!
另、第七十的英语怎么拼？谢！