Chemical engineering is based on the principles physics, chemists , and math

Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles

Pham Tuan said everything quite strange although he ……….. when he was on the ground.

Before  she moved , Arlane had been the president of the organization since four years

Per capita income is an entire income dividing by the number of people in the nation

Kiwi birds search the ground with the bills for insects, worms, and snails to eat

Although usual living on or under rocks or on coral reefs, marine snails have been observed in great various of habitats.

Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions: On Sunday mornings, I either go shopping or staying at home and read books and newspapers

Everyone knows about the pollution problems, but not many people have _____ any solutions. 

Believed that Jack had home safely, we felt relieved.

You have ever heard about Yuri Gagarin, ____?

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

Choose the correct verb form:

____ 60,000 people filled the stadium.

Choose the word which has a different stress pattern from the others.

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

Abraham Lincolns boyhood home resembled those of others midwestern pioneers, with its dirt floor, sleeping loft, and crude fireplace.

I _____ in the middle and missed the end of the film. 

The coal is the world’ abundant fossil fuel .

Choose the best option:

That’s the doctor for ................ Cliff works.

He gave  ................ his job in order to go back to university.

Marie, ................ I met at the party, called me last night.