单项选择题

You must shine your shoes.（）

A．polish
B．clear
C．wash
D．mend

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单项选择题

In judging our work you should take into consideration the fact that we have been very busy recently.（）

A．thought
B．account
C．mind
D．brain

单项选择题

A．great deal has been done to remedy the situation.（）

A．maintain
B．improve
C．preserve
D．protect

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