单项选择题

When I worked as a bank clerk，I had the opportunity to meet a rich_____ of people: students，soldiers and factory workers.

A．diversity
B．kind
C．range
D．variety
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单项选择题
______my neighbor’s kid with his coming exam，I spend an hour working with him every day.
A．To help
B．Helping
C．Helped
D．Having helped
单项选择题
He has fancy dreams about his life，and nothing ever quite______ his expectations.
A．matches
B．makes
C．reaches
D．realizes
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