13. ______ by water on all sides, the island is famous for its fresh seafood. (A) Surrounded (B) Surrounding (C) To surround (D) It is surrounded

10. The dirty air, known as smog, is a combination of weather conditions, fumes and smoke from cars and factories and therefore is sure to ______ many serious health problems. (A) bring up (B) give rise to (C) look forward to (D) have little to do with