Environmental pollution seems to be an important _______________ in the increase in cancers all over the world.

Canada's aboriginal population _______________ a small but important part of our country.

The young popstar became famous while still in high school after winning a _______________ with a major record label.

I don't know what you mean. Can you be a bit more _______________ about what problems your car is having?

Smoking is a _______________ cause of cancer.

When you didn't come to work I just _______________ that you were sick.

The Canadian _______________ is largely based on natural resources.

The woman was unable to _______________ the man who stole her purse because it had been too dark at the time of the robbery.

The government is offering more programs which _______________ low income families.

The refund _______________ at this store allows you to return items for a credit, but not for cash.

Celebrities generally receive so much fan mail that it is impossible to _______________ to each and every letter personally.

The polar bear's diet _______________ almost entirely of seals and fish.

Fever is usually _______________ as an oral temperature above 37.4 degrees.

Every Christmas, she works hard to _______________ food and blankets to the homeless.

Studies show that women are much less likely than men to occupy positions of _______________ at work.

The diet of brown bears _______________ depending on what foods are available in that particular season or habitat.

Current _______________ trace our first human ancestor to Africa about 5 to 7 million years ago.

Many people seem to _______________ that Canadians are just the same as Americans.

One can _______________ some important conclusions using the results of a proper set of experiments.