单项选择题

As he was not interrupted, he ________ the work by evening.

A．could finish
B．was able to finish
C．succeeded finishing
D．manage to finish
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单项选择题
These pieces of wood have _______ and become useless because of too much rainfall.
A．disappeared
B．decayed
C．altered
D．transformed
单项选择题
Although reservations in advance are usually required in motels in busy areas, this is not always _______ in less crowded parts of the country.
A．the case
B．the reality
C．the truth
D．the fact
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