单项选择题

Without water, there ______ no life on the earth.

A．would be
B．be
C．is
D．was
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单项选择题
______there is life, there is hope.
A．Before
B．As
C．Where
D．After
单项选择题
He seems ______ everything about the pop singer.
A．to know
B．knowing
C．know
D．knew
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