单项选择题

Approximately (three - fourths) of (the earth's) surface (are) covered (with) water.

A．three-fourths
B．the earth’s
C．are
D．with
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单项选择题
There (are) not many people in this city (which) (own) the houses they (live in).
A．are
B．which
C．own
D．live in
单项选择题
(Having spent) his (last) penny for the cheese, he was determined (to eat) it all, even thought it tasted (bitterly) to him.
A．Having spent
B．last
C．to eat
D．bitterly
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