单项选择题

How do you account for your absence from the class last Thursday

A．explain
B．examine
C．choose
D．expand
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单项选择题
When he was the director of the company, his first accomplishment was to improve the working conditions.
A．plan
B．purpose
C．achievement
D．task
单项选择题
Have you got a spare pen
A．a short
B．an extra
C．a thin
D．a long
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