Most Polar seals retreat  to open water during the winter, but a few types have lrn to survive on and under the ice all round.

Choose the correct answer to complete the sentence. "______ in Thanh Hoa Province, the Citadel of the Ho Dynasty was added to UNESCO's World Heritage List in 2011."

Choose the correct answer. "_________ my granfather is old, he still goes jogging."

Choose the letter A, B, C or D to complete the sentences. "The electrical appliances you buy should be __________."

Choose the correct answer to complete the sentence. "The Citadel of the Ho Dynasty, _____ is located in Thanh Hoa Province, was added to UNESCO's World Heritage List in 2011"

Choose the mistake in the following sentences: Some of the people they were invited to the party cannot come.

Choose the letter A, B, C or D to complete the sentences. " If we go to the disco, they ________ to loud music."

The nitrogen makes up over 78 percent of the Earth’s atmosphere, the gaseous mass surrounding planet.

Though he did not develop sign language, Laurent brought it on America from France

Last night, when I was reading, I heard the door to open and saw shadow move across the floor.

The number of time she spends gardening is increasing every day.

Jame Dickey’s first poe was published during he was still senior in college

Choose the best to complete the sentences: She was a very accomplished pianist. 

To see the statue of Liberty and taking picture from the top of the Empire State Building are reasons for visiting New York City.

Many people have found the monotonous buzzing of the vuvuzela in the 2010 World Cup matches annoyed.

Short-wave radios which  can receive and transmit signal are used by pilots, the police, and amateur operator.

A water mocule consists of two hydrogen atoms and has oxygen atom.

Alcoholic beverages vary widely in content, ranging from only 2 or 3 percent for some light beers to as high to 60 percent for some vod and brandies.

To assure the safely of workers who must handle radioactive materials, the employer should not leave them ente) contaminated areas without protective clothing.

Two experiments were completed in like fashion, but the results of the experiments were at all like.

Some psychologist believe that those who encouraged to be independent, responsible, and competent in childhood are likely more others to become motivated to achieve.