单项选择题

His mother always keeps a candle in the house ______ there is a power cut.

A. in the case
B. in case
C. frightened
D. in the event
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单项选择题
They live in the countryside now. ______ they go to the city to see their children.
A. Sometimes
B. Some times
C. Sometime
D. Some time
单项选择题
The reason ______ the little boy died was lack of medical care.
A. why
B. because
C. for
D. as
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