单项选择题

According to the speaker, what sometimes cause people to have trouble sleeping

A． Failure to rest during the day.
B． Lack of sleep on weekends.
C． Vigorous exercise in the evening.
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What are they talking about
A． Losing money.
B． Dr. Baker.
C． Taxi.
单项选择题
What happened to Winston Churchill in 1954
A. He was eighty years old.
B. He became famous for his portrait.
C. He gave the prime minister a present.
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