A number of cars ______ in front of the park
A. is parked
B. was parked
C. are parked
D. has parked
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the number of articles published on smoking ______ amazing.
A. is
B. are
C. were
D. have been
The majority of doctors ______ smoking is harmful to health.
A. are believed
B. had believed
C. has believed
D. believe
The majority of the damage ______ easy to repair.
A. is
B. are
C. were
D. be
Four-fifths of the crop ______.
A. are ruined
B. was ruined
C. were ruined
D. have been ruined