TOEFL Structure: #121-130

This TOEFL structure test has ten questions. You will see an estimate of your score when you finish the test.

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Instructions

Underlines

Each question of this type has one grammar mistake. Choose the underlined portion that has the mistake.

Example:

I are tired, but I will study anyway.

(A) are
(B) but
(C) will
(D) anyway

In this case, we should choose (A) since I are tired is incorrect; the sentence should read I am tired, but I will study anyway.

Blanks

For this type of question, choose the answer choice that best completes the sentence.

Example:

I ______ tired, but I will study anyway.

(A) is
(B) being
(C) am
(D) to be

In this case, we should choose (C) since the sentence should read I am tired, but I will study anyway.

121.

122.

Sufficient gravitational force is ______ atmosphere; otherwise the atmosphere will drift off into space.

necessary for retaining planet
retaining necessary planet
retained by necessary planet
necessary to retain a planet's

123.

While oxygen is readily available in isolated form, ______ .

hydrogen does not
no hydrogen
not any hydrogen
hydrogen is not

124.

The varying orbit of Pluto means that ambient temperatures also vary greatly.

varying
of
ambient
vary

125.

Along northernmost edge of the United States runs the US/Canada border.

northernmost
of
runs
border

126.

In most states a sales tax ranging from two per cent to ten per cent ______ on most purchases of luxury items.

is levied
are levied
to levy
levying

127.

An iron smelting forge ______ ore into usable metals.

melts
is melting
melting
should melting

128.

Only after losing its skin does snake begin to grow another.

losing
snake
to grow
another

129.

Lost among the devastation of the tornado was the remains of the houses and buildings.

Lost among
devastation
was
buildings

130.

The one in charge of a meeting ______ toward the end of the meeting.

table general important topics
tables generally the important topics
generally the topic of the table
generally tables important topics