单项选择题

What does the woman mean

A．She knows Professor Arnold has come.
B．She thinks Professor Arnold has checked in.
C．She is sure that Professor Arnold has arrived.
D．She doesn’ t know whether Professor Arnold has arrived.
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A．Science.B．Maths.C．History.D．Computer programming.
A．Science.
B．Maths.
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A．Return immediately for his parents missed him badly.B．Return immediately for his aunt is expecting him.C．Return immediately for something unusual happened at home.D．Return immediately for somebody was seriously ill at home.
A．Return immediately for his parents missed him badly.
B．Return immediately for his aunt is expecting him.
C．Return immediately for something unusual happened at home.
D．Return immediately for somebody was seriously ill at home.
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