On February 20th, 1962, “Friendship 7” orbiting the Earth in the manned flight that lasted just under five hours.

Can I borrow your scissors? Mine …….not sharp enough. 

Diseaseis not widespread than before because of better preventive medicine and vastly improved nutrition.

Ten miles ………. a very long distance for us to walk.

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

The Vermont Elememary Science Project, according to its founders, are designed challenge some of the most widely held belief about teaching .

The teacher decided to fail  the student with the grounds his poor performance in test and too small progress.

Our tomatoes are ripen nicely, they’ll be ready to eat in about week.

Hawaii’s eight major islands and numerous islets form the only state in the United States that is not lie on the mainland of North America.

Those who have never been abroad is eager to see how different other cultures are.

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

Some foods … him ill. 

In a person’s lifetime, brain can store 100 trillion pieces of informations .

The number teaching assistants required meeting undergraduate course need is rapidly increasing

Ballet performer must be believable actor and actress as well as expert

At present, my daily expenses are just about equal ________ my income. 

The geology professor showed us sample about volcanic rock which dated back seven hundred years.

Many small houses and huts were washed away when river bursted its banks.

Most babies will grow up to be as clever as their parents

Several million points on human body registers either cold, heat, pain , or touch.

The accounting supervisor was unpleased to learn that budget report would not be finished by time.