Nowhere in nature is aluminum found free, owing to its always ____ with other elements, most commonly with oxygen.

All their __ have been shown up by their own deeds.

His companions have threatened to__ his crimes to the police.

The local government leaders are making every effort to __ the problem of poverty.

Many artists predict that this brilliant young actor __ to be a shinning star.

All of us know, color-blind people often find it difficult to __ between blue and green.

We expect Mr. White will ____Class One when Miss Jane retires.

You must pay import ____on certain goods brought into this country.

Unless all the members agree to __8__to the plan there may be further development in the course of action.

When the idea of winning in sports is carried to excess, ____competition can turn into disorder and violence.