1.  The buildings in cities are much     houses in the countryside. (high)

⇒ higher than

2.  There are     trees in villages    in cities. (many) 

⇒more
3.  Of three cattle raised in my village, chickens are   . (popular) 

⇒ the most popular
4.  The life in cities is    and    than in the countryside. (fast, convenient) 

⇒ faster/ more convenient
5.  A village with only 13000 people is not     the city. (crowded)

⇒as crowded as

6.  Harvest time is often    and    for farmers. (busy, hard)

⇒the busiest and hardest
7.  The city is   . The countryside, on the other hand, is   . (noisy, quiet) 

⇒noisier/ quieter
8.  The air pollution in cities is    in the countryside. (serious)

⇒more serious than

Dựa vào cấu trúc:

So sánh hơn:

-Nếu từ chỉ có 1 âm tiết: ADJ/ADV + đuôi -er + than

-Nếu từ có 2 âm tiết trở lên: more + ADJ/ADV + than

So sánh nhất:

-Nếu từ chỉ có 1 âm tiết: the + ADJ/ADV + -est

-Nếu từ có 2 âm tiết trở lên: the + most + ADJ/ADV

So sánh ngang bằng:as + ADJ/ADV + ashoặc so + ADJ/ADV + as