问题描述：
It is usually considered that living with disability is ____.
a.challenged and frustrated
b.challenged and frustrating
c.challenging and frustrated
d.challenging and frustrating
此题答案为A 为什么
a.challenged and frustrated
b.challenged and frustrating
c.challenging and frustrated
d.challenging and frustrating
此题答案为A 为什么
问题解答：
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