12. Typhoon are severe tropical storms. They sometimes happen in my ………………

A. stay             B. Home           C. House           D. hometown

13. Singapore í famous for its …………………and green trees.

A. cleanliness            B. Cleanly            C. Cleaning             D. clean

14. Water ________________ in the lake has made the fish die.

A. pollution            B. Pollute            C. Polluted               D. polluting

15. It’s difficult to ……………… what the planet Earth will be like in 100 years’ time.

A. imagine              B. Expect               C. Remember             D. see

16. If the air wasn’t dirty, I ________________ so much.

A. wouldn’t sneeze             B. Sneeze            C. would sneeze          D. to sneeze

17. While she was dancing, the princess . . . . . a witch.

A. was seeing         B. Saw           C. See              D. is seeing