TOEFL STRUCTURE SKILLS 01-14

The planet Mercury __________rotations during every two trips around the sun.

• three complete

• completes three

• the completion of three

• completing three of the

In prehistoric ___________ of western Utah was covered by Lake Bonneville.

• times, a large part

• times, there was a large part

• part of the time

• for large parts of time

Lapis Lazuli, ________ stone, hs been valued for ornamental purposes for more than 6000 years.

• an opaque deep blue

• is an opaque deep blue

• it is an opaque deep blue

• that is an opaque deep blue

Mountaineers _______ climb Mount Everest must make reservations to do so, often up to seven years in advance.

• want to

• they want to

• who want

• wanting to

Most slang terms are simply old words ________ additional new meanings.

• give

• given

• are given

• they are given

The upper levels of the sun's atmosphere are of very low ______ heats the gases there to very high temperatures.

• dense and solar

• density, solar activity

• density, but solar activity

• density and the activity of the sun is

The helicopter is able to hover in ___________ powered rotors produce lift even at zero forward speed.

• flight because of the

• flying the

• the flying of the

• flight because the

______________provided a living for nearly 90 percent of the population of the American colonies.

• Farming was what

• What farming

• Farming was

• What was farming

Story of a Bad Boy,a semiautobiographical novel by Thomas Bailey Aldrich, ranks high among books ___________ have incorporated their boyhood experiences.

• the American authors

• which are American authors

• in which American authors

• are those which American authors

North Carolina's outer banks are a chain of low, narrow islands ___________ the mainland from the frequent Atlantic storms in the area.

• they buffer

• that buffer

• to buffer them

• that they buffer