He drives more carefully than Jack does.
A.
B.Jack drives less carefully as he does.
C.He doesn’t drive less carefully as Jack.
D.He drives as more carefully as Jack does.

The growth in the economy makes people’s living condition better.
A.The economy grows the more, people’s living condition is the better.
B.The better people’s living condition is, the more the economy grows.
C.If people’s living condition is better, the economy grows more.
D.The more the economy grows, the better people’s living condition is.

It's hard to concentrate when you're tired.
A.It’s harder to concentrate, you are more tired.
B.The more tired are you, the harder it is to concentrate.
C.You are more tired, you are hard to concentrate.
D.The more tired you are, the harder it is to concentrate.

It's still cold, but it was colder yesterday.
A.
B.It isn't as cold as it was yesterday.
C.It is as warm as it was yesterday.
D.It wasn’t as cold as it is today.

Our neighbours have lived here for quite a long time, but we've lived here longer.
A.Our neighbours haven't lived here as long as us.
B.Our neighbours have lived here longer than we have.
C.
D.We’ve live here for more time than our neighbours.

Karen's hair isn't as long as it used to be.
A.
B.Karen has longer hair now.
C.Karen’s hair is the same as it used to be.
D.Karen used to have longer hair.

There are fewer people at this meeting than at the last one.
A.There aren't as many people at this meeting as at the last one.
B.There was as many people at last meeting as at this one.
C.There are more people at this meeting as the last one.
D.There wasn’t as many people at the last morning like at this meeting.

The children are excited with the difficult games.
A.The children are less excited when the games are difficult.
B.The more difficult the games are, the more excited the children are.
C.
D.The more the games are difficult, the more the children are excited.

This sofa is less comfortable than that one.
A.That sofa isn’t more comfortable than this one.
B.This sofa is as comfortable as that one.
C.That sofa is more comfortable as this one.
D.This sofa isn’t as comfortable as that one.

The red book is as expensive as the white one.
A.The red book is the same price as the white one.
B.The white book is the same price like the red one.
C.The red book isn’t so cheap as the white one.
D.The red book is cheaper than the white one.