单项选择题

So little () about mathematics that the lecture was complete beyond me.

A．I know
B．do I know
C．I knew
D．did I know

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单项选择题
() her words were spoken, there was no mistaking that she was pleased.

A．Gently as
B．As gently
C．As gently as
D．So gently as
单项选择题
It will be difficult to dissuade him now that he () his mind.

A．is making up
B．made up
C．is to make up
D．has made up
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