单项选择题

The output of our factory is now twice（）it was three years ago.

A. what
B. that
C. as
D. which

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单项选择题

（）is known to the world, Mark Twain is a great American writer.

A. As
B. That
C. Who
D. Which

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Lawrance will do anything for Lily except（）her money.

A. lending
B. lend
C. borrowing
D. borrow

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