单项选择题

A．to improve
B．improving
C．to improving
D．of improving
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单项选择题
A．Go out to work.B．Listen carefully to John.C．Be calm and patient.D．Do the easiest thing.
A．Go out to work.
B．Listen carefully to John.
C．Be calm and patient.
D．Do the easiest thing.
单项选择题
A．capabilityB．capacityC．probabilityD．ability
A．capability
B．capacity
C．probability
D．ability
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