问题
选择题
Parents complain their children are behaving unreasonably _____children consider their parents to be old-fashioned.
A．while
B．when
C．or
D．after
答案
答案：A
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Parents complain their children are behaving unreasonably _____children consider their parents to be old-fashioned.
A．while
B．when
C．or
D．after
答案：A