The packaging materials for these goods should be ...........  substances.

Our civilization is so commonplace to us that sometimes we stop to think about its complexity.

Near equator, the slant of the Sun’s rays is never great enough to cause temperatures to fall below the freezing point.

One responsibility of human be is to interfere with the actions of another people except in the face of injustice.

Since it was so difficult for American Indians to negotiate a peace treaty or declare war in their native language, they used a universal understood form of sign language.

I will show you around the city when you ______ to visit me.

Did they tell you that there has in our town an excellent beach less than a mile from the campus?

I may look half asleep, but I can assure you I am ...............awake.

The modern American dictionary is typically a single compact volume published with a modest price.

Commercially honey is heated and filtered in order to stabilize and clarity it.

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: For a long time, this officials have been known throughout the country as political bosses and law enforcers.

In the sixteenth century, Francois Vieta, a French mathematician, used the vowels “a”, “e”, “i”, “o”, “u” to represent a unknown number.

A book may be evaluated by a reader or professional writer to create a book ________.

Is Professor Su going to have _____ X-ray check. 

It is important ________ students to read as many books as possible.

Identify the error in each sentence: Stuart stopped to write his letter because he had to leave for the hospital

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

It’s time you went home, but I’d rather you stay here.

Internet, definitely causes some problem in society, however, it surely provides many benefits as well.

Choose the best answer:

Before starting ............... for this company, I spent a year .....................