The remarkable _________ of life on the Galapagos Islands inspired Charles Darwin to establish his theory of evolution.

The English language contains a(n) _________ of words which are comparatively seldom used in everyday conversation.

While typing, Helen has a habit of stopping __________ to give her long and flowing hair a smooth.

Between 1897 and 1919, at least 29 movies _________, in which artificial beings of various kinds were portrayed.

Hydrogen is the fundamental element of the universe _________ it provides the building blocks from which the other elements are produced.

There ought to be less anxiety over the perceived risk of getting cancer than __________ in the public mind today.

The professor didn’t have time enough to go into it ___________, but he promised to discuss it with us at the office hour.

Their demand for a pay rise has not the slightest _________ of being met.

Many American householders failed to carry out the mortgage provisions, and now they have to _________ the consequences.

A safety analysis __________ the target as a potential danger. Unfortunately, it was never done.