单项选择题

Doctors' efforts to develop a new way to see the brain working have so far ______ with satisfaction.

A．found
B．shown
C．given
D．met
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单项选择题
With the curtain ______, the room was dark.
A．drew
B．were drawn
C．drawing
D．drawn
单项选择题
Frank realized fully what he had dreamed about could not ______ have happened in real life.
A．likely
B．certainly
C．doubtfully
D．possibly
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