Exercise 2: Viết lại câu sau. Giữ nguyên nghĩa: 1/ They were happier yesterday than today.  Today they ............................................. 2/ English isn't so interesting as biology.  Biology is .......................................................... 3 / I'm not as good at English as him.  He is ..................................................................... 4/ His role is more important than mine.  My role ............................................................. 5 / My kitchen is bigger than yours.  Your kitchen .............................................................. 6 / I haven't got as much money as you.  You have ............................................................... 7 / French is more difficult than English.  English ............................................................... 8 / Nam isn't so careful as his father.  Nam's father ............................................................... 9 / Mai is prettier than her sister.  Mai's sister ................................................................... 10 / Hai Duong isn't so noisy as Ha Noi.  Ha Noi ................................................................ 11/ My house is smaller than his.  His house ..................................................................... Exercise 3: Viết lại câu sau. Giữ nguyên nghĩa: 1/ No one in my class is more intelligent than Lan.  Lan is ....................................................... 2/ We don't know a happier person than him.  He is ..................................................................... 3/ Nothing is more interesting than football.  Football is ........................................................ 4/ Is this the biggest hat you've got ?  Have you got .................................................................. ? 5/ Everest is higher than any mountains in the world.  Everest is ................................................ 6/ No one in my class is fatter than Minh.  Minh is ........................................................................ 7/ Mr Ron is the richest man in our town.  No one ....................................................................... 8/ No one in my group is better at English than Lan.  Lan is ........................................................