efficient => (n) (a)  

pollute => (n) (a)   : sự …..

private => (n) (a)  

pollute => (n) (a)   : chất …..

technology => (adj) (a)  

urban => (v) (a)  

dwell => (n) (a)  

crowd => (adj) (a)  

decide => (n) (a)  

emit => (n) (a)  

interrupt => (n) (a)  

live => (adj) (a)  

renew => (adj) (a)  

sustain => (adj) (a)  

attract => (adj) (a)  

popular => (n) (a)  

predict => (n) (a)  

able => (v) (a)  

interact => (n) (a)  

safe => (n) (a)  

secure => (n) (a)  

think => (n) (a)  

sustain => (n) (a)  

appoint => (n) (a)  

conclude => (n) (a)  

urban => (n) (a)  

impress => (adj) (a)  

pay => (n) (a)  

medicine => (adj) (a)  

impress => (n) (a)  

solve => (n) (a)  

neighbor => (n) (a)  

operate => (n) (a)  

install => (n) (a)  

reduce => (n) (a)  

interact => (adj) (a)  

inform => (adj) (a)  

prescribe => (n) (a)  

Tiền được hoàn lại : (a)