Chicago’s Sears Tower, now the taller building in the world, raise 1,522 feet from the ground to the top of its antenna.

The local economy which once used to be in crisis now depends to a big extent on menial jobs provided by the recent development of ecotourism.

Identify the error in each sentence: All of the (A)principles that are collected (B) here serve to make up a system of (C) checking and evaluating security issues (D)

Identify the error in each sentence: 

Works are written by Vladimir Nabokov often contain heroes and heroines who have lived in many places

.........that the hope for cancer control may lie in the use of vaccine.

The wooden fence surrounded the factory is beginning to fall down because of the rain.

It is difficult to get used to sleep in a tent after having a soft comfortable bed to lie on.

The Carbon atoms of the stone are so strongly bonded that a diamond can only be scratched with other diamond.

Choose the best answer:

Jane was interested in ............. to classical music.

A progress has been made toward finding a cure for AIDS.

There’s no need for you to try to _____ an argument with him. You need to calm down or your relationship will get worse.

Vitamin E, which is found in nutritious foods such as green vegetables and whole grains, action as an antioxidant in cell membranes.

Allen’s not having finished his thesis did not discourage him from applying for other degree program.

Studies have shown that American children who learn to read by the third grade are less likely to __________ of school.

The composer Verdi has written the opera Aida to celebrate the opening of the Suez Canal, but the opera was not performed until 1871 .

Choose the best answer:

There are many ways of ..................  ourselves in a big city.

Every city in the United States has traffic problems because the amount of cars on American streets and highways is increasing every year.

He is neither ______ African, nor _____ Asian. He is from _____ Europe. 

The skin receives nearly the third of the blood pumped out by the heart.

Do you think what people have smoked less and less?

Pam really fond ________ reading detective stories by Agatha Christie