单项选择题


A．why
B．when
C．how
D．what
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单项选择题
A．willB．wouldC．shallD．should
A．will
B．would
C．shall
D．should
单项选择题
A．politiciansB．scholarsC．professionalsD．conservatives
A．politicians
B．scholars
C．professionals
D．conservatives
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