The ozone layer must be protected because it shields the Earth from excessive raviolet radiations .

The teacher taught her students to look careful to the left and the right at three times before crossing the highway.

In the beginning, radios cost much more than they do today because they turned out slow and expensive by hand

There are also other hobbies that I ____________ in for a while. 

Despite of rain or snow, there are always more than fifty thousand fans at OSU football games

“You look nice in that red shirt” “……..............” 

Everybody congratulated the astronauts ____ their successful trip into space. 

In addition to enhanced their reputations through strategic use of philanthropy, companies sponsoring social initiatives to open new markets

They were 30 minutes later because their car ......... down.

After writing it , the essay must be duplicated by the the student himself and handed the department secretary before the end of the mont

After Allan had searched for twenty minutes, he realized that jacket had been laying on the table the ent time

Find out error in each sentence: The oil price is believing to be rising again.

Not until recent has interest in synthetic fuels been revived.

Robert arrived without his book. He  ...............    it.

The most visible remind of the dose relationship betwee the United States and France is (the famous Statue of Liberty, that stand in New York Harbor.

The pioneers raised com as their chief crop beldcause they kept well any season and could be used in many ways.

Friends advise her to stop doing housework because her old age.

Hardly he had got downstairs when the phone stopped rang yesterday afternoon.

Haywood Broun was a read widely newspaper olumnist who wrote during the 1920’s and 1930’s.

Jeff and Gloria went to pick out carpeting and decoration, including furnitures, for the new VIP lounge that was opening the third floor.

The bodies of cold-blooded animals have same temperature their surroundings, but those warm-blooded animals do not.