-Because large quantities of water____. (福建)

A. have polluted　 B. is being polluted 　C. has been polluted 　D. have been polluted

9 . As a result of the serious flood, two-thirds of the buildings in the area___. (陕西)

A. need repairing　B. needs to repair 　C. needs repairing 　D. need to repair

10. Listening to loud music at rock concerts_____caused hearing loss in some teenagers .(湖南)

A .is B. are C. has D. have