题目内容
Parents always tell their children ________ more politely if they see them breaking a rule of etiquette.
A.to have
B.to behave
C.to be
D.to be have
答案:B
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题目内容
Parents always tell their children ________ more politely if they see them breaking a rule of etiquette.
A.to have
B.to behave
C.to be
D.to be have