单项选择题

So little ______ about stock exchange that the lecture was completely beyond me.

A．did I know
B．I had known
C．I knew
D．was I known
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单项选择题
How long do you think ______ to finish this urgent task
A．did it take you
B．it will take you
C．will it take you
D．it to take you
单项选择题
______ was not the way the event happened.
A．Which the press reported
B．That the press reported
C．What did the press report
D．What the press reported
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