问题
选择题
At times ,worrying is a normal, ________response to a difficult event or situation—a loved one being injured in an accident , for example.
A．effective
B．individual
C．inevitable
D．unfavorable
答案
答案：C
A有效的；B个人的；C不可避免的，不可回避的；D不利的，不喜欢的；