单项选择题

Anyone can borrow books from the library ______ he has a library card.

A．since
B．so long as
C．even though
D．unless
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______ surprised me most was to see some of the villagers seated on the benches in the corner.
A．What
B．Which
C．That
D．It
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There are few places in this country ______ wheat can't grow well.
A．where
B．which
C．when
D．if
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