单项选择题

The cost of living in Liberia, West Africa, has ______ in the past five years because of the internal conflicts.

A．skyrocketed
B．outer-spaced
C．overestimated
D．under-questioned
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He does a bit of writing, but first and ______ he's a teacher.
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You have to finish the work within the ______ time.
A．expected
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