Long prized for its medicine value, ginseng these days has become the most common of energy-boosting drinks particularly for high- performance athletes.

With above 20,000 species, the world’s population of ants has continued to increase even as other animal populations have declined.

Before the invention of the printing press, books have been all printed by hand. 

Reducing gender ______ improves productivity and economic growth of a nation.

Men are traditional decision-makers _________ bread-winners.

Research has proved that a baby can distinguish its mother’s voice the moment he is born.

I’m just going to the shops; if anyone rings, tell them I will be back for a few minutes.

The most visible remind of the dose relationship between the United States and France is the famous Statue of Liberty, which stands in New York Harbor.

Identify the error in each sentence: (A) A few of the audience (B) is enjoying (C) every minute of the (D) performance.

Deep cratered, the moon is over 2100 miles in diameter with negligible gravity and atmosphere.

Mark the letter A, B, C, or D to indicate the underlined part that needs correcting in each of the following questions.

My parents let me to go out without saying anything.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

Nam checked to make sure he had his _________ and passport.

A City University Professor reported that he discovers a vaccine which has been 80 % effective in reducing the instances of tooth decay among small children.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

The street food in Hoi An delicious and ________.

Find the mistake in each of the following sentences.

The (A) wives are (B) also responsible to (C) the family finances (D).

Choose the best answer from the four options given (marked A, B, C, or D) to complete each sentence: 

He asked me if I __________ to school by bicycle every day.

In The Sociology of Science, now considered a classic, Robert Morton discusses cultural, economy and social forces that contributed to the development of modern science.

The authorities are worried about the increase of drug abuse.

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

What caused the explosion in the factory it is still unknown

Before dinosaurs became extinct, plant life is very different on Earth.