单项选择题

Despite efforts to eradicate it, corruption persists, though it doesn't ______

A．speed
B．hasten
C．accelerate
D．boost
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单项选择题
How can a nonscientist explain an abstract theory with such ______.
A．confidence
B．assurance
C．self-possession
D．insurance
单项选择题
My parents are going to London next week and I wish I ______ time to go with them.
A．have
B．had
C．would have
D．will have
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