No one is in this room now, _    ? 

The teacher decided to fail the student with the grounds of his poor performance in tests and too small progress

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

The oxygen in the air we breathe has no tasted, smell, and color.

The Gray Wolf, a species reintroduced into their native habitat in Yellowstone National Park, has begun to breed naturally there.

Tea did not become popular in Europe until the mid 17th century when it has been first imported to England and Holland.

Some psychologist believe that those who are encouraged to be independent, responsible, and competent in childhood are likely more than others to become motivated to achieve.

Foreign students who are doing a decision about which school to attend may not know exactly where the choice are located.

Choose the correct answer to complete the sentence. "Most people admit that they _____ to global warming"

The author has not rarely written anything that was not a best-seller.

Gwendolyn Brooks, which won a Pulitzer Prize for Poetry in 1950, had 75 poems published by the time she was twenty.

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

Choose the correct answer to complete the sentence. "Having denied the responsibility for the _____ it caused, the factory was forced to close down"

Some birds can travel at speeds approaching one hundred miles an hour, and a few land animals can so.

My parents lent me the money. Otherwise, I ____ this shop. 

Mercury is not often visible because it is so near the sun to be seen.

Nocturnal creatures, raccoons forage primarily at night and spend their days rest in their dens

Jack had to skip breakfast otherwise, he will be late for class.

Materials that of clay are among the most ancient manufactured articles and have played a vital role in human civilization.

Light can travel from the Sun to the Earth in eight minute and twenty seconds.

Before bridges were built, all transport across major rivers in the area were by ferryboat.