Adjective Clause

After its introduction in 1969, the float process _________________ the world’s principal method of manufacturing flat sheets of glass.

• (A) by which it became

• (B) it became

• (C) which became

• (D) became

Most folk songs are ballads ________ have simple words and tell simple stories.

• (A) that

• (B) although

• (C) when

• (D) what

The melting point is the temperature ________ a solid changes to a liquid.

• (A) which

• (B) at which

• (C) which at

• (D) at

There are six types of flamingos, all ________ have long legs, long necks, and beaks that curve sharply downward.

• (A) of them

• (B) that

• (C) of which

• (D) they

Cable cars are moved by cables __________ underground and are powered by a stationary engine.

• (A) they run

• (B) that they run

• (C) run

• (D) that run

In 1850, Yale University established Sheffield Scientific School, ______________________________.

• (A) engineers were educated there

• (B) where engineers were educated

• (C) in which were engineers educated

• (D) where were engineers educated

Most beans _________________________ ________ are a form of kidney bean.

• (A) their cultivation in the United States

• (B) that are cultivated in the United States

• (C) are cultivated in the United States they

• (D) they are cultivated in the United States

In addition to being a naturalist, Stewart E. White was a writer ________________ ________ the struggle for survival on the American frontier.

• (A) whose novels describe

• (B) he describes in his novels

• (C) his novels describe

• (D) who, describing in his novels

Seals appear clumsy on the land, __________ are able to move short distances faster than most people can run.

• (A) but they

• (B) which they

• (C) they

• (D) which

Diamonds are often found in rock formations called pipes, ______________________ the throats of extinct volcanoes.

• (A) in which they resemble

• (B) which resemble

• (C) there is a resemblance to

• (D) they resemble