单项选择题

Even the best - build machine will not run forever without proper maintenance.

A. eternally
B. smoothly
C. dependably
D. accurately
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单项选择题
From the incident, they have learned that prompt decisions often lead to bigger regrets.
A. urgent
B. hasty
C. immediate
D. wise
单项选择题
The girl felt extremely awkward and uneasy when she could answer the teacher' s question.
A. difficult
B. stupid
C. relaxed
D. worried
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