Choose the best option to complete the sentences: Reducing the size of classes may improve _______ standards.

Co Loa was the capital of Early Ngo Dynasty, ___________ in fact it only existed with the proper function of a capital in 6 years under Ngo Quyen’s reign.

Choose the letter A, B, C, or D to show the underlined part that needs correction:

After (A) learning the lesson, the children got (B) many information (C) about the history of (D) their country.

 An __________ family is a family with more than two generation living together under the same roof.

Choose the best answer to the following sentences.

He hesitated __________ his mind about when they should leave for the United Kingdom

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

Tell me ...................... you want and I will try to help you.

The medical problems of parents and their children tend to be very similar to because of the hereditary nature of many diseases

Identify the one underlined word or phrase A, B, C, or D that must be changed for the sentence to be correct: 

Because of it consists only of a relatively short strand of DNA protected by a shell of protein, a virus cannot eat or reproduce by itself. 

My cousin composes not only the music, but also sings the songs for the major Broadway musicals.

Interest in automatic data Processing has grown rapid since the first large calculators were introduced in 1950

Running along the 180th meridian, the International Date Line is separated one day from another.

- “Would you bother if I had a look at your paper?” - “……………”

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

Carnegie hall was the first building in New York designed special for orchestral music

Some bacteria are extremely harmful, but anothers are regularly used in producing cheeses, crackers, and many other foods.

Child marriage_______ in several parts in the world because it limits access to education and training.

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

After driving a car for ten miles, John suddenly realized that he has been driving in the wrong direction.

Mark the letter A, B, C, or D to indicate the underlined part that needs correcting in each of the following questions.

Look at the dark clouds. I’m sure it will rain soon.

The evolution of fishes is a history of constant adaptation to new possibilities, and a refined of these adaptations.