Scuba diving is  usually carried out in the ocean in that people can explore the underwater world.

Those who have never been abroad is eager to see how different the other cultures are.

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

She has disappeared three days ago, and they are still looking for her now.

To save the California condor from (B) extinction, a group of federal, local, and privately organizations initiated a rescue program.

Air pollution, together with littering, are causing many problems in our large, industrial cities today.

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

Mr. Chen is more ______ because he has finally agreed to allow his daughter to join an overseas volunteer organisation in Africa.

While studying the chemistry of human body, Dr. Rosalyn Yalow won a Nobel Prize for the research she conducted on the role of hormones

This exit door can __________ in case of emergency.

Americans annually import more than $3 billion worthy of Italian clothing, jewelry, and shoes.

Choose the underlined part (A, B, C, D) that needs correcting:

The (A) Caspian Sea, a salt lake(B), is the largest (C) than any other lakes(D) in the world.

By studying the fossils of pollen, which extremely resistant to decay, researchers can gain useful information about the vegetation of the past

Someone who has ever tried to pick up spilled Mercury will agree that this element is hard to handle.

The woman of whom red car is parked in front of the bank is a famous popstar.

Nowhere he could find a good place to study, so he returned to his dorm.

He looked like he had been in some strange land where age advanced at a double pace

Although there are more than 2,000 different variety of candy, many of them are made from a basis boiled mixture of sugar, water, and corn syrup.

By the end of the month, I’ll be working for this firm for a year.

Never before has so many people in the United States been interested in soccer.

Bells told people of happy vents, such as weddings and born or, sometimes had to announce unpleasant events such as a death.

Choose the best option A, B, C or D to make meaningful sentence: "The house is _______ situated near the station and the shops."

The first things a new international student must do include renting an apartment, registering for classes, and to get to know the city.