Choose the best option:

She is a famous ___. She tries her best to protect rare animals from extinction.

Choose the correct answer to complete the sentence. "They were praised for having decided ______ their carbon footprints"

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

Being a nurse involves being cheerful, working unsocial hours, and come home with me smelling of disinfectant.

Phil can't go to .......... movies tonight because he has to write .......... essay. 

The authorities are worried about the increase of drug abuse.

Mutualism is a relationship between animal species which in both benefit.

No matter what different, various music types have one thing in common: touching the hearts of the listeners.

Economists have tried to discouragethe use of the phrase “underdeveloped nation” and encouraging the more accurate phrase “developing nation” in order to suggest an ongoing process.

For many years, scientists studying the effects that the sun has on human skin.

You wanted me to tell you about what I was doing here and how was my life .

If you make a five-days trip across the Atlantic Ocean, your ship enters a different time zone everyday.

Pictures of the surface of the planet Venus was received yesterday from the space probe “Explorer”, which was launched last year.

That lecturer, his name I have forgotten, is very well-known

Mr. Brown bought ..............new car ..................last week. 

Jason's father bought him ............ bicycle that he had wanted for his birthday. 

It is estimated that about 640 women remain illiterate in ............ world, mostly in developing countries. 

When you passed the town hall clock, did you notice what time was it

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

Of the much factors that contributed to the growth of international tourism in the 1950’s, one of the most important was the advent of jet travel in 1958

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.