16. Glass containers can be used ____ storing food or other items.
A. for B. to C. of D. into
17. ____ can not only educate the public on conservation but also bring economic benefits to the locals.
A. Ecology B. Ecotourism C. Preservation D. Relaxation
18. If I were you, I ____ products made from recycled materials.
A. could select B. will select C. would select D. might select
19. Buying food that is sourced locally will help eliminate or reduce transportation ____.
A. degradations B. impacts C. powers D. chemicals
20. - “I do believe ecotourism will grow strongly in Vietnam through support from government and
international organizations.”
- “____”
A. There is no doubt of it. B. Yes, it is important.
C. I can't say no. D. I couldn't agree more.