单项选择题

She liked to stay at home. She had previously traveled seldom and then only （）

A．When necessary
B．what possible
C．which necessary
D．while possible

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单项选择题
Little（）about his own safety, though he was in great danger himself.

A．does he care
B．he cared
C．did he care
D．he cares
单项选择题
If death occurs at home, （） discovers the body should contact the doctor.

A．who
B．whoever
C．whom
D．whomever
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