11. Mi and Nick like ______________ back Mi’s home village on holiday.

A. comes B. come C. came D. coming

12. If the factory ________ dumping poison into the lake, all the fish and other aquatic animals will die.

A. continues B. to continue C. continued D. will continue

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

A. pollution B. pollute C. polluted D. polluting

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

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

15. If the factory continues dumping poison into the lake, all the fish and other aquatic animals ________________.

A. die B. to died C. dead D. will died

16. Water pollution is the ________________ in the lake has made the fish die.

A. contaminating B. contaminate C. contaminated D. contamination

17. If I were you , I ______________ that car .

A. would buy B. buy C. bought D. buying

18. If we recycle more , we ________________ the Earth.

A. help B. would help C. helping D. will help