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单项选择题


A．occasion
B．occasional
C．occasionally
D．always
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热门试题

单项选择题A．healthB．seriousC．healthyD．strong

A．health
B．serious
C．healthy
D．strong

单项选择题A．to beB．beingC．havingD．to have

A．to be
B．being
C．having
D．to have