Many small houses and huts were washed away when the river bursted its banks

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

Two unique features of the Arctic they are lack of precipitation and permanently frozen ground.

The native people of the Americans are called Indians because when Columbus landed in the Bahamas in 1492 , he thought that he has reached the East Indies.

Exercising well is as important to your health as sleep and eating correctly

When he arrived at the furniture shop, they had been sold the table he wanted.

Dwelling primarily in the ice Northern Polar seas, beluga whales are characteristically small, white, agile, and elusive.

Some of plants in this store require very little care, but this one needs much more sunlight than those 

One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them: 

If he weren’t too old, he would apply to the job as a reporter. 

I thought this book was rather dull at the first, but I’ve changed my mind.

A huge tree crashed through the bedoom roof and broke my bed and most of the other furniture. __________ in the room, I would have been killed. 

She sighed with relief when she found out that she has passed the difficult test.

Nga speaks English very well, _    ?

If the water level has raised a little higher, the dam would probably have broken

David is talking to his friend, _    ?

No one is in this room now, _    ? 

Choose the correct answer to complete the sentence. "Such unhygienic conditions encourage the ______ diseases"

Since the Great Depression of the 1930’s, social programs such as Social Security have been built into the economy to help avert severity business declines

As our new furniture will deliver on Monday morning, I’ll have to stay at home to check that it was not damaged during transmit

It was Vitus Bering, the Danish sea captain, who discovered Alaska on its voyage to Russia in 1741.

Because the tachinid fly is a parasite of harmful insects, much species have been imported into the United States to combat insect pests.