—What are you doing, Jack?—I’m looking for some information about the event ________ attracts all the people’s attention.
#42898
A
who
B
whose
C
which
D
whom
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After Mandela was free (自由的) in 1990, he chose to shake hands with the people ________ wanted to kill him.
#42587
A
whose
B
which
C
/
D
who
Last month, doctors used a 3-D printer to rebuild the face of a person ____ had a bad accident.
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A
/
B
which
C
whom
D
who