单项选择题


A．however
B．therefore
C．eventually
D．better
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单项选择题
A．ensuredB．assuredC．promisedD．emphasized
A．ensured
B．assured
C．promised
D．emphasized
单项选择题
A．thatB．whichC．whenD．where
A．that
B．which
C．when
D．where
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