1.A new bridge is being built at the moments

2.Some of my books have been taken away

3.Tea can't be made with cold water

4.The meeting will be held before May Day

5.The engine of the car has to be repaired

6.Adverstising is spent a lot of money every year

7.Some pictures were taken away by the boys

8.This room may be used for the classroom

9.A story is going to be told by our teacher

10.Has the window of the laboratory been changed?

11.Will the children be brought home?

12.How can this safe be opened?

 1/ They are building a new bridge at the moment.

->A new bridge is being built at the moment

2/ Somebody has taken away some of my books.

->Some of my books have been taken away

3/ They can't make tea with cold water.

->Tea can't be made with cold water

4/ They will hold the meeting before May Day.

->The meeting will be held before May Day

5/ They have to repair the engine of the car.

->The engine of the car has to be repaired

6/ People spend a lot of money on advertising every year.

->A lot of money is spent on advertising every year

7/ The boys broke the windows and took away some pictures.

->The windows were broken and some pictures were taken away by the boys

8/ They may use this room for the classroom.

->This room may be used for the classroom

9/ Our teacher is going to tell a story.

->A story is going to be told by our teacher

10/ Have they changed the window of the laboratory ? 

->Has the window of the laboratory been changed?

11/ Will the buses bring the children home ?

->Will the children be brought home by the buses?

12/ How can they open this safe ?

->How can this safe be opened?

1. It is about two hours for the meeting

2. They are building a two kilometers long bridge

1.The meeting lasts for two hours.

It is a two-hour meeting.

2.They are building a bridge which two kilometers long

They are building a two-kilometers bridge.

1. It is about two hours for the meeting

2. They are building a two kilometers long bridge

Viết lại các câu sao cho nghĩa không đổi

1.The meeting lasts for two hours

It is a two-hour meeting

2.They are building a bridge which is two kilometers long

They are building a two-kilometer bridge.

It is a two- hour meeting

They are building a two- kilometer bridge

1. It is about two hours for the meeting

2. They are building a two kilometers long bridge

1. It is about two hours for the meeting

2. They are building a two kilometers long bridge

1. It is about two hours for the meeting

2. They are building a two kilometers long bridge

Viết lại các câu sao cho nghĩa không đổi

1.The meeting lasts for two hours

It is a two-hour meeting.

2.They are building a bridge which is two kilometers long

They are building a two-kilometer bridge.

1. It is about two hours for the meeting

2. They are building a two kilometers long bridge