Choose the best option to complete the following sentences:

Lan used to (play)_____________ with toys when she (be)_____________ three.

Algebra is the branch of mathematics concerned with operations on sets of numbers or other elements that are often represented at symbols

It was in 1971 that transatlantic supersonic transportation became commercially availability

Choose the best answer

There will be an increase in tax for those earning in excess of twice the national average              .

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

 His idea contributes a lot ________ our project.

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____________ is the Great Wall? It’s between 5 and 13 meters high.

In the United States, about 75 percent of the total tomatoes crop is processed into juice, caned tomatoes, sauces, pastes, and ketchup.

Stars derive their energy from thermonuclear reactions that take place in their heat interiors.

In the beginning, radios cost much more than they do today because they turned out slowly and expensively by hand 

Petroleum is composed of a complex mix of Hydrogen and Carbon

A traveler can reach some of the village along the Amazon only by riverboat.

Choose the best answer: 
Huy got a bad mark for his English test. He must have been really _________.

Jim didn’t have a house and a car, for he was jobless for a long time

She doesn’t think that men are ________ leaders than women.

The steam engine is usually thought of as a relative modern invention, but the Greeks built a kind of steam engine in ancient times.

Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

I knew they were talking about me__________ they stopped when I entered the room.

Choose the best option A, B, C or D to make meaningful sentence: "When you go out in the hot sun, you ______ always put cream on your skin to avoid getting sun-burnt."

Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

You should say goodbye to your brother__________ you leave for Europe

Choose the best answer: 
If you don’t ..................... your invention, other people may well take advantage of it.

Emergency relief, including medicines, clothing, and foodstuffs, were sent to the earthquake zone immediately following news of the disaster.