单项选择题

A great deal has been done to remedy the situation.

A. maintain
B. improve
C. preserve
D. protect
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单项选择题
It took us along time to mend the house
A. build
B. destroy
C. design
D. repair
单项选择题
He hasn't the funds to carry out his design.
A. make
B. keep
C. change
D. implement
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