Each exercise [] on a different grammar point.

The air in the balloon [] when heated.

The contrast could not have been made more [].

This [] is used to calculate the area of a circle.

We have plans to [] into the U.S. market.

Low birth weight may be caused by [] factors, such as smoking during pregnancy.

Economic [] had a lot to do with their decision to sell the company.

Oils are [] from the plants.

The funds available for the health service are [] and we cannot afford to waste money.

I've only seen short [] from the film.

In the [] analysis, it is the drug companies that are going to profit from this policy.

My schedule is quite []. I could arrange to meet with you any day next week.

The [] committee controls the school's budget.

To [] learning, each class is no larger than 30 students.

He's a world [] on marine mammals.

Ministers depend on civil servants for [] advice.

The film [] the utter horror of war.

We have just received the information about the [] conference.

The new TV companies are fully [] the potential of satellite transmission.

The woman couldn't pay the lawyer's [].

The report revealed that workers had been [] to high levels of radiation.

A cruise ship [] extensive spa facilities.

An important [] of Van Gogh's paintings is their bright colors.

The meeting will have the usual []: introductory session, group work and then a time for reporting back.

Vegetable prices [] according to the season.

[] law regulates trade with other countries.

When the psychological costs are [] in, a different picture will emerge.

According to a source, the U.S. government has thousands of testimonies, photos and [] collected over time.

The Greeks [] Hellenic culture around the Mediterranean basin.