单项选择题

You needn"t introduce him to me. I"ve met him on several ______.

A．occasions
B．times
C．schedules
D．cases
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单项选择题
She was so ______ in her job that she didn t hear anybody knocking at the door.
A．absorbed
B．attracted
C．drawn
D．focused
单项选择题
The work seemed easy at first, but it ______ to be quite difficult.
A．broke out
B．turned out
C．worked out
D．set out
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