1. 

a) My car isn't very big. I want a bigger car.

b) This house isn't very modern. I prefer a mordener house.

c) You are not tall. Your sister is taller than you.

d)  It's not warm today. It's colder than yesterday.

e) Lao isn't very large. Vietnam is larger than Lao.

g) Hoa isn't work very hard. I work harder than her.

h) Last night I went to bed as usual.

i) The exam is quite difficult. It's not as easy as we expected.

j) Is your headache better ? No , it's worse.

a, My car isn't very big.I wants a..bigger. car.
b, This house is not very modern. I prefer...a more modern.. house.
c, You are not tall. Your sister...is taller.....than you.
d, It's not warm today. It. is warmer. yesterday.
e, Lao is not very large. Vietnam....is larger....
f, People today are not police. In the past they were.......
g, Hoa is not work very hard. I work...harder than hoa...
h, Last night i went to bed...early than..usual.
i, The exam is quite difficult. It...is more difficult than....we expected.
j, Is your headache better? No, It....is worse...(bad).
2. Complete the sentences. Use get/become and given adjectives
a. The air in the city....become polluted........(polluted).
b. Those house.....become modern......(modern)
c, The streets in the village......become......(clean)
d. People in the hometown.....get busy.....(busy)
e. Diamonds.........get valuable.......(valuable)
f. I'm tired. I....get hungry........(hungry)
g. You should go on a diet. You...get fat.....(fat)
h. Computer.....become important.......(important) in our life.