Choose the mistake in the following sentences: Lan classified her books in different categories. 

Everyone who has traveled across the United States by car, train, or bus are surprised to see such a large expanse of territory with such variation among the lifes of the people.

There exists more than 2,600 different variet of palm trees, with varying flowers, leaves, and fruits.

A calorie is the quantity of heat required to rise one gallon of water one degree one atmospheric pressure.

Choose the letter A, B, C or D to complete the sentences. "The electrical appliances you buy should ____   eco-friendly."

She sighed with relief when she found out that she has pass the difficult test.

Individuals with chronic liver disease is gravely at risk for premature death, heart seizures, strokes as well as hypertension, jaund, and malnut

Mark the letter A, B, C, or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

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."

My English this term is  .......   than that of last year.

The Earth is the only_______ having life in the solar system. 

Choosethe word(s) CLOSEST in meaning to the following word(s). "call for"

Southern California, is known as its mild winters, has become the new home for many senior citizens escaping the Northern winters.

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

It was Mary Anderson, an amate invention, who first patented windshield wipers for automob.

Choose the correct answer to each of the following questions. "They all eat, drink and do the same things _____ the sites of the world wonders."

Psychologists at the University of Kansas has studied the effects of the color (of a room on people’s behav.

Choose the letter A, B, C or D to complete the sentences. "20 percent of the population had attended college _____had no degree"

The world oceans have risen on average of 6 inches over the 100 years, which has been considered as an evidence that global warming has an effect.

The 6-year-old resembles to his mother somewhat more than his older brother does 

The authorities are worried about the increase of rug abuse.