单项选择题

Never before that night______the extent of my own power.

A．did I feel
B．had I felt
C．I had felt
D．I did felt
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单项选择题
People seldom trust him since he usually fails to______his promises.
A．keep to
B．keep on
C．keep off
D．keep up
单项选择题
However much he______his expenses, he cannot make both ends meet.
A．cuts down
B．cuts in
C．cuts out
D．cuts off
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