TOEFL REVIEW EXERCISE (Skill 1-36)

______ in the United States declined from twenty million in 1910 to nine on the 1970.

• For a number of horses

• The number of horses

• When the number of horses

• That the number of horses

Because of his reservation about the issue, ____ refused to vote for it.

• who

• and

• which the senator

• the senator

Bats avoid running into object by ______ high-frequency sounds and listening for echoes.

• the emission

• emitted

• emitting

• they emit

It has been estimated that if we intend to stay above the starvation level, ____ the food supply.

• so we will have to double

• and it must double

• which it must be double

• we must double

This sentence is incorrect. Find the error!

To determine (A) an object's force, the mass and (B) speed of the (C) object must be measure (D).

• to determine

• mass and

• the

• measure

This sentence is incorrect. Find the error!

The most common (A) time for tornados (B) to occur are (C) in the afternoon or evening on a hot, humid (D) spring day.

• most common

• tornados

• are

• hot, humid

This sentence is incorrect. Find the error!

Automaker Nissan and Ford and several (A) aerospace research facilities in Great Britain are working (B) lately to apply active noise cancellation (C) to entire (D) cars and planes.

• several

• are working

• active noise cancellation

• to entire

This sentence is incorrect. Find the error!

When a country in (A) an early stage of development, investments (B) in fixed (C) capital C are vital (D).

• country in

• investments

• fixed

• are vital

This sentence is incorrect. Find the error!

John Chapman became famous (A) in American folklore as "Johnny Appleseed" after he plants (B) apple trees throughout (C) the north-eastern part of (D) the United State.

• famous

• plants

• throughout

• part of

This sentence is incorrect. Find the error!

Inasmuch (A) he kept mostly (B) to himself (C), the author of The treasure of the Sierra Madre was (D) known as " the mysterious B. Treuen.

• Inasmuch

• mostly

• to himself

• was