If those areas are damaged or destroyed, they will not be available to future generations.

A. Unless those areas are not damaged or destroyed, they will be available to future generations.

B. Because those areas are damaged or destroyed, they will not be available to future generations.

C. To keep them available to future generations, those areas must not be damaged or destroyed.

D. If damaged or destroyed, those areas will not be available to future generations any longer.

Bài tập Trắc nghiệm Tiếng Anh 10 - Unit 10: Ecotourism (Writing)