................. in UNESCO’s World Heritage Sites in 2003, Phong Nha Ke Bang is noted for its cave and grotto systems.

Choose the best to complete the sentences: She was a very accomplished pianist. 

Thanks to obstinacy, he achieved what he wanted. If he were discouraged earlier by failures, he would not have reached his aims.

Some trees such as the Banksias need be burned periodically so that the seeds would open and germinate.

Inventing by Roger Bacon, the magnifying glass led o the creation of other scientific tools which produced immeasurable science progress

With above 20,000 species, the world’s population of ants has continued to increase even as other animal popula have declined.

Students in the United States often support themselves by sitting, working in restaurants, or they drive taxi cabs

The faster Thanh walks,  .......

Industrialist Henry Ford introduced assembly-line techni into the manufactures of motor vehicles 

Floods, earth and other natural disaster happen all over the world, causing death and material damage

Salt was too scarce and precious that it was used as money .

Measles are cured without much difficulty nowadays

Light travels from the Sun to the Earth in eight minuteand twenty seconds.

Despite its smaller size, the Indian Ocean is as deep Atlantic Ocean.

He has got several hundred bottles of wine which he keeps in the cell below his house.

Ho Chi Minh city is  ....... than Hanoi.

The Medal of Honor is the highe award for military brave that can be given to any soldier of the United States.

Number of students attend the class dwindled until only two remained

Two experiments were completed in like fashion, but the results of the experiments were at all like.

People who exercise regularly are less likely develop heart disease than is those who do not keep fit.

Choose the correct answer to complete the sentence. "Lying along the Perfume River in Hue City, the Complex of Hue Monuments is a ______ example of a well-designed capital city."