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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单项选择题
Lawrence will do anything for Lily except（）her money.

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