单项选择题

We were told that we should follow the main road ______ we reached the central railway station.

A．whenever
B．until
C．while
D．wherever
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单项选择题
______ I feel pity on hurricane victims in Southeast Asia, I can't really do very much to help them but contribute my pocket money.
A．As long as
B．When
C．While
D．Even
单项选择题
As is known to all, ______ Yang Liwei has become a space hero is ______ we have expected.
A．that; which
B．what; that
C．what; which
D．that; what
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