单项选择题

The program has helped Chinese and American scholars ________ friendship and learn about each other's culture.

A．cement
B．stiffen
C．straighten
D．establish
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单项选择题
They just bought a new house last week and will have it ________ next week.
A．done up
B．do up
C．made up
D．make up
单项选择题
His debts had to be ________ after he committed suicide with his rifle.
A．laid off
B．written off
C．turned off
D．put off
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