The atmosphere is as much a part of the earth as ________ its soils and the water of its lakes, rivers and oceans.
A) has
B) do
C) is
D) are
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Her terror was so great ________ somewhere to escape, she would have run for her life.
A) only if there had been
B) that there had only been
C) that had there only been
D) if there was only
While you pedal away on the exercise bicycle, a machine will be ________ your breathing and pulse.
A) reviewing
B) screening
C) surveying
D) monitoring
Understanding the cultural habits of another nation, especially ________ containing as many different subcultures as the United States is a complex task.
A) these
B) that
C) one
D) such
Their bedroom windows ________ a lovely garden.
A) look up to
B) look out for
C) look forward to
D) look out on