单项选择题


A．although
B．while
C．as
D．since
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单项选择题
The passage gives you information as to how to______.
A．complain about your credit card
B．apply for a credit card
C．report the loss of a credit card
D．pay for your credit card
单项选择题
A．involvedB．involvingC．involveD．to involve
A．involved
B．involving
C．involve
D．to involve
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