1) We should eat (healthier) food.
2) Today the streets aren’t as (clean) as they used to be.
3) It’s (the worst) mistake he has ever made.
4) She speaks Italian (better) than English.
5) Chinese is (more difficult) than English.
6) It is as (cold) today as it was yesterday.
7) Her eyes are (greyer) than mine.
8) He was the (fattest) man is the village.
9) Who is the (most attentive) student in your group?
Your handwriting is now (better) than it was last year; but still it is not so (good) as Nick’s handwriting. Nick has the (best) handwriting of all.
2)Research has improved people's life
3)Scentists have analysed volcano's noise
4)The study of science provides people with knowledges about environment
5)The study of the natural world may help to save environment
6)We can feel a great affect of nature
7)The business world is constantly changing and the result of it is environment pollution