单项选择题

I don’’t doubt ______ he will come on time.

A．whether
B．which
C．what
D．that
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单项选择题
According to the passage, pushing factors include the following EXCEPT______.
A．unemployment
B．famine
C．weather
D．war
单项选择题
Historically the Ukrainians are an ancient ______ which has persisted and survived through terrible calamity.
A．country
B．nation
C．state
D．territory
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