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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单项选择题
Jane ______ as soon as she recognized it was her former boy friend's voice.
A．called up
B．waited on
C．took up
D．rang off
单项选择题
______ 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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