单项选择题

A．Teach David’s class while he is absent.
B．Give Professor Winston the key to David’s office.
C．Leave a message on the board in David’s classroom.
D．Bring David the homework that was due today.
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单项选择题
A．Observe the rules themselves.B．Consistently ensure the security of their children.C．Forbid things which have no foundation in morality.D．Be aware of the marked difference between adults and children.
A．Observe the rules themselves.
B．Consistently ensure the security of their children.
C．Forbid things which have no foundation in morality.
D．Be aware of the marked difference between adults and children.
单项选择题
A．Stick to our own points of view.B．Make an apology first.C．Avoid making mistakes.D．Change our lifestyles.
A．Stick to our own points of view.
B．Make an apology first.
C．Avoid making mistakes.
D．Change our lifestyles.
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