1. Human beings should use natural resources more (efficient) efficiently_

S+ V+ adv

adj_ly=> adv

2. This is not the best city we've lived, but it is (live) liveable

liveavle (adj): đáng sống

S+ tobe+ adj

3. (Sustain) Sustainable development is one of the most important goals in our country.

Sustainable development: phát triển bền vững

cần 1 adj bổ nghĩa cho danh từ development

4. People in the city are worried about limited (private) privacy sensors are installed in many places.

adj+ N

5. City dwellers are encouraged to use public transports to reduce greenhouse gas (emit) emmissions and reduce waste.

gas emmissions: khí thải ga

6. We are living in a (neighbor)...neighborhood...

neighborhood: the area of a town that surrounds someone's home, or the people who live in this area

7. Most cities of the future will probably use (renew) renewable resources ....environment.

renewable resources: năng lượng có thể tái tạo đc