单项选择题

The effect of the medicine, ________ we had expected, was quite encouraging.

A．which
B．that
C．as
D．what
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单项选择题
The new evidence threw some light ________ the case.
A．in
B．to
C．at
D．on
单项选择题
Only in recent years ________ begun to realize the importance of Internet.
A．people have
B．have people
C．that people have
D．since have people
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