She didn't know how to swim until she was 25.

It was not until 

 This book is not as expensive as that one.

That book is 

"I'll come to your birthday party next weekend," Nam said to Lan.

They are going to build a new hospital in this area.

A new hospital 

 "I don't want to be criticized by non-professionals", said the film star.

 "I don't want to be criticized by non-professionals", said the film star.

The film star objected 

My brother started to read that book two days ago. He's still reading it.

No students in my class can speak English as fluently as Lan does.

Without his help, we would not have been successful.

Just after solving one problem, he was faced with another.

Scarcely 

 She has never behaved so violently before.

 He can't afford to buy the car.

The car 

Most students ignored what the professor was saying.

Her jealousy increases with her love for him.

 He cannot be blamed for the accident in any way.

In 

The boss made all the employees work at the weekend.

All the employees 

 Nam is not old enough to be in my class.

Nam is too 

The final match was put off because of the bad weather.

We will go swimming if it is sunny.

 Unless 

 Nam and I have never been there before.

 Nam and I have never been there before.

 Those houses are beautiful.

The bike still needs repairing.

The bike hasn't 

He prefers drinking tea to coffee

He'd rather 

The last time she arrived here was 6 years ago.

She was made to finish the report before going home.

  Nga does a very good imitation of the English teacher.

She may not be very well but she still manages to enjoy life.

Her poor health 

Lan doesn't get on well with her neighbor any more.

 Trung and Nga didn't decide to move to a bigger house until after the birth of their third child.

Only when 

Trung and Nga didn't decide to move to a bigger house until after the birth of their third child.

If you don't do your homework, you will be punished.

I advised you to stop smoking.

This is the last time I go to that country.

 I certainly 

The lesson was so boring that I fell asleep.

The lesson was so boring that I fell asleep.

It isn't necessary for you to do this exercise today.

"Would you like to come to my party tomorrow?" Nam invited me.

Tuan is my boyfriend. His father is a doctor.