单项选择题

（）a dark night, they took the sick boy to the hospital. And after an hour’s curing, the boy was out of danger.

A. On
B. At
C. With
D. In

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单项选择题

A. She hurt her arm.
B. She lost her way.
C. She landed the wrong way.

单项选择题

A. In 2 hours.
B. In 4 hours.
C. In 6 hours.