单项选择题

If you have any ______ about the products on display，one of our salespeople will be happy to assist you.

A．incidents
B．instances
C．inquiries
D．innovations
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单项选择题
Workers maintain that the company s ______ to implement modern safety regulations puts everyone in the factory at risk of injury.
A．discouragement
B．indecision
C．unwillingness
D．hindrance
单项选择题
The release date for the documentary film about life in America is ______, but the producer still has a lot of work to do.
A．approached
B．approaching
C．to approach
D．approach
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