The professor is thinking to go toconference on conservation next month.

Despite the disappearance of the Mayan Empire, there are still Mayans in the region that once inhabited.

Those who have never been abroad is eager to see how different other cultures are

I’m trying to save up for a trip to Canada, so I can’t afford buying much at moment.

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

Disease is not as widespread than before because of better preventive medicine and vastly improved nutrition

The midnight sun is a phenomenon in which the Sun visible remains in the sky twenty-four hours or longer

Designers of athletic footwear finely tune each category of shoes to its particularlyactivity by studying motion and physiology.

Do you know the reason ……. humans are interested in Mars and other planets in thesolar system?

Choose the best option:

I passed all my exams - I’m …………!

Since light spreads out all directions, a light viewed from a great distance appearing dimmer than it actually is.

Before the invention of the printing press, books have been printed by hand.

The Dave Brubek Quartet, of the most popular jazz bands of the 1950s, had a particularly loyal following on campuses college.

Nobody was watching, so the little boy took the packet of sweets shelf and putting it in his pocket

Short-wave radios can receive and transmit signals are used by pilots, the police, and amateur operator.

All root vegetables grow underground, and not all vegetables that grow underground roots

Protecting Florida’s coral reefs is difficult because some of the corals are very fragile even the touch of diver’s hand can kill it.

Not until ecent has interest in synthetic fuels been revived.

Let’s go, ________?

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

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