To survive, most birds must eat at least half their own weigh food every day

Muscles are essentially made up by elas fibers that lend flexibility to the body

Even the smallest pulley can be done stronger by adding whe to its system to create more leverage

Most bats roost in crevices, caves, or building by day and are active at night or twili

Such typing mistakes _____ avoided if you had been more careful. 

The organizers of the charity were moren surprised at how many people lined up to receive the clothes donating (by the outdoing mayo

I put my new book of zoo here on the desk a few minutes ago, but I cannot  find it.

1971 U.S government policy not only put warnings on cigarette packs but also ban television advertising of cigarettes.

Choose A, B,C or D on your answer sheet to indicate the underlined part that  needs correction in each of the following questions:

Frank plays tennis worse of all the players

Of the two lectures, the first was by far the best, partly because t person who to delivered it such a dynamic style

Once the scientist had figured out the preci path of the comet, he is finding that he was able to predict its  next appearance.

Because it is a healthy way to exercise, aerobic dancing is considered as an excellent method for releasing tension

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."

The medical problems of parents and their children tend to be very similar to because of the heredi nature of many diseases

Dislike the gorilla, the male adult chimpanzee weighs un 200 pounds.

It took the mayor over an hour explanation to the other members o the board why he had missed (last meeting.

Choose the correct answer to complete the sentence. "Lying along the Perfume River in Hue City, the Complex of Hue Monuments is a ______ example of a well-designed capital city."

They are knowthat colds can be avoided by eating the right kind of food and taking exercise regular.

The more important theorem of all in plane geometry is the Pythagor Theorem.

The magazine _____ by more people if it had better articles. 

In winter it is important for farmers to provide food and warm their animals.