There are twenty species of wild roses in North America, all of which have prickly stems, pinnate leaves, and large flowers, which usually smell ………….

Having …………. the topics for their essays, the students were instructed to make either a preliminary outline or a rough draft.

Gilbert Stuart is considered by most art critics …………….. greatest portrait painter in the North American colonies.

As a safety measure, the detonator for a nuclear device may be made of …………….., each of which is controlled by a different employee.

An equilateral triangle is a triangle …………….. and three angles of equal size.

Some students set confused ……………… having to suffer long and hard years before they attain any level of success.

…………….. are found on the surface of the moon.

His …………….. made him cry.

…………….. two waves pass a given point simultaneously, they will have no effect on each other's subsequent motion.

A child in the first grade tends to be …………….. all of the other children in the class.