Most sand dunes are always in motion as wind pushes sand upward one side of each dune, over top, and down the other side.

The number of students attend the class dwindled until on two remained.

They are known that cold can be avoided by eating the right kind of food and taking exercise regular.

Needles are simple – looking tools, but they are very relatively difficult to make.

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

We have rented two videos and watched them with some friends last night.

Chemical engineering is based on the principles of physic, chemists, and mathematics.

Mark the letter A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions: 

The Imperial Citadel of Thang Long was first built during the Ly Dynasty and then expanded by subsequent dynasties.

The Gray Wolf, a species reintroduced into their native habitat in Yellows National Park, has begun to breed natural there

We work with many people who are different from us because each persons are unique.

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

Dinosaurs are traditionally classified as cold-blooded reptiles, but recent evidence based on eating habis, posture, and skeleton structural suggests some may have been warm-blooded

Before television became so popular , Americans used to entertain each other evening by playing games, saying stories, and singing songs.

Mary: "I had a really good time. Thank for the lovely party" 

Jane: "    __________" 

The government raises mone operate by tax cigarettes, liquor, gasoli, tires, and telephone calls.

Our nervous system has over ten billionnerve cells in a network covering every inches of our skin and organ.

Industrialist Henry Ford introduced assembly-line techniques the manufactures of motor vehicles.

The invention of Silicon chip in the 1960s has revolutionized computer industries

The harder he tried, the worst he danced befo the large audience.

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

Anyone interested in the use of computers can learn much  if you have access personal computer.