单项选择题

He has been asked to account __________ his absence．

A．of
B．on
C．about
D．for
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单项选择题
This pair of shoes isn’t good．but that pair is __________ better．
A．less
B．more
C．even
D．hardly
单项选择题
How did it come __________ that you made a lot of mistakes in your homework
A．about
B．to
C．after
D．with
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