单项选择题

Remember to ask for a ______ of quality for these goods; otherwise they will not offer any maintenance.

A．certificate
B．receipt
C．warranty
D．mark
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单项选择题
Children have no ______ to this adult shop.
A．path
B．way
C．access
D．entrance
单项选择题
Ellis and her sisters could hardly recognize the value of that family heirloom, ______
A．couldn't they
B．couldn't she
C．could they
D．could she
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