Action and Linking Verbs

This is a true story about the nation's least expensive dam.

• about

• is

• expensive

In 1958, a severe earthquake caused a great landslide in Montana.

• caused

• in

• severe

About 43 million cubic yards of rock and earth crashed into the Madison River.

• cubic

• crashed

• into

Within seconds the enormous mass of rock and earth formed a dam.

• enormous

• formed

• seconds

The dam was not only very high but more than half a mile long as well.

• very

• more

• was

The earth and rock immediately blocked the flow of the river.

• blocked

• immediately

• flow

A seven-mile lake formed in the river behind the dam.

• behind

• formed

• in

A cement dam of this size would be very expensive.

• cement

• very

• would be

Crews work for years on the construction of a cement dam.

• construction

• on the

• work

Today the earth-and-rock dam remains strong.

• and rock

• remains

• strong