I'm on night duty. When you go to ..............bed, I go to ............ work. 

It is becoming extremely difficult to grow enough to feed the world’s rapidly increased population.

If the lecture ____ so quickly, we’d have understood his speech.

The organizers of the charity were more than surprised at how many people lined up to receive the clothes donating by the outdoing mayor.

The number of teaching assistants required meeting undergraduate course needs is rapidly increasing.

When she retires in September 1989, tennis champion Christine Evert was the most famous woman athlete in the United States

The Egyptians first discovered that drying fruit preserved it, made it sweeter and improvement its flavor.

Lassen National Park, the situation of a dormant volcano, is one of the most beautiful but least visited parks in the western United States.

Others believe that both sides would jump at the chance to resume negotiations without a delay

The world would look eerie different if human eyes were sensitive to infrared radiation.

Pictures of the surface of the planet Venus was received yesterday from the space probe “Explorer”, which was launched last year.

One of the most difficult questions in defining sleep is “What are the functions of sleep?”

..................United States is ...................world's biggest consumer of energy. 

Being a nurse involves being cheerful, working unsocial hours, and come home with me smelling of disinfectant.

The wooden fence surrounded the factory is beginning to fall down because of the rain.

This will have a serious effect about agriculture

The graphics ability of a computer depend on the speed of its processor and the size of its RAM

Our house has been redecorated last week. You can still smell paint when you enter and the wallpaper has a striking contrast with the floor.

Although they reflect a strong social conscience, Arthur Miller’s stage works are typical more concerned with individuals than with systems.

He usually travels to..................Philadelphia by.................. train. 

A fragrant plant has tiny sacs that makes and stores the substances that give it a pleasant odor.