单项选择题

The oil must be used up, ______ the light went out.

A．since
B．as
C．because
D．for
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单项选择题
The republication of the poet's most recent works will certainly ______ his national reputation.
A．magnify
B．strengthen
C．enlarge
D．enhance
单项选择题
The price of seafood used to be much lower than now, ______
A．wasn't there
B．wasn't it
C．doesn't it
D．didn't it
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