Exercise 3: Find the mistake in these sentences and fix the mistake
1. D. natural
=> naturally (V+ adv)
2. A. importance
=> important
3. D. scientifically
=> scientific (adj + noun)
4. D. economy
=> economic (adj + noun)
5. A. optimist
=> optimistic (adj: lạc quan) (adj + noun)
6. A. Destify
=> desertification (the process of becoming or making something a desert)
7. C. destructive
=> destructions (sự phá huỷ)
8. D. cultivating
=> cultivates (sai thì)
9. C. cooperative
=> cooperation (sự hợp tác)
10. C. human
=> humane (nhân đạo)
