单项选择题

The telephone has been ringing ______ in the office all morning.

A．continually
B．continuously
C．gradually
D．consequently
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单项选择题
The cost of the repairs to my car came to $600 ______.
A．above all
B．at all
C．in all
D．for all
单项选择题
The rising costs made it hard to ______ the business.
A．carry off
B．carry on
C．carry out
D．carry through
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