An escalator is a moving that transporting people from one point to another means of linked threads

The medical science began with the Greek Hippocrates, who earned for himself the title father of Medici

Villagers are hoping for raining this month after nearly a year of dry weathe

Neither the twins nor their friend ..........  in the party now.

I put my new book of zoology here on the desk a few minutes ago, but I cannot to find it.

The ozone layer must protected because it shields the Earth from excessive ultraviolet radia

If the Oxygen supply in atmosphere was not replenished by plants, it would soon be exhausted

You may choose one from the five World Heritage Sites in Viet Nam ____ in this leaflet to visit on your next field trip.

A thunder usually follows lightningfive seconds for every mile between flash and the observer.

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

Choose the letter A, B, C or D to complete the sentences. "20 percent of the population had attended college _____had no degree"

After a while, the we have been following became thick undergrowth

 If I were you, I ............ my holidays on Phu Quoc Island.

Choose the letter A, B, C or D to complete the sentences. " I’d rather you _____________a noise last night; I couldn’t get to sleep"

Every scientist knows that gravity is the force that maintains earth and the planets in its orbit around the Sun.

My father used to giving me some good advice whenever I had problem 

Bill was about average  in performance in comparison with other students in hislass.

All the schools throughout of the country underwent the educatio reform.

Alcoholic beverages vary widely in content, ranging from only 2 or 3 percent for some light beers to as high to 60 percent for vodkas and brandies.

Although the Red Cross accepts blood from most donors, the nurse will not let yougive blood if you have just had a cold.

Gold, silver, and copper coins are often alloyed whit harder metals to make them hard as enough withsta wear.