Living here at the top of the mountain with no one else around, you must be very _____ .
A. alone
B. single
C. lonely
D. impatient
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The idea that the earth is flat was _______ centuries ago.
A. appointed
B. rejected
C. hesitated
D. measured
Her mistakes ______ the death of the patient.
A. led to
B. brought about
C. broke off
D. resulted from
If I ____ you, I would do it at once.
A. was
B. should
C. were
D. am