单项选择题

不同的一项是（）

A．whole
B．while
C．whisper
D．whistle

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单项选择题
21（）

A．studying
B．planning
C．holding
D．taking
单项选择题
What can be inferred about the baggage boys
A．They could earn much, but they had to work hard.
B．Many of them earned money in a dishonest way.
C．They were all from poor families.
D．They were all thin, young boys.
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