单项选择题

The ______ of living has kept rising in recent years.

A．expense
B．cost
C．price
D．bill
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单项选择题
Many elderly people are suffering from the ______ disease, rheumatism, as a consequence of the high humidity there.
A．acute
B．cute
C．slow
D．chronic
单项选择题
This was a piece of news of great importance to every man and woman who ______ waiting anxiously outside the building.
A．were
B．has been
C．have been
D．was
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