单项选择题

A．He must have some money in a bank.
B．He must sign a contact.
C．He must pay the security deposit.
D．He must clean his own room.
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单项选择题
Mintel undertakes market surveys on an annual basis.
A．Y
B．N
C．NG
填空题
A．sourcesB．resourcesC．originsD．ways
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