单项选择题


A．however
B．therefore
C．eventually
D．better
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单项选择题
A．checked inB．concludedC．observedD．decided
A．checked in
B．concluded
C．observed
D．decided
单项选择题
A．dueB．aptC．planD．rather
A．due
B．apt
C．plan
D．rather
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