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.