问题
选择题
It is reported that there are various reasons _____more and more people feel depressed at this time of year.
A．why
B．when
C．what
D．how
答案
答案：A
考查定语从句。先行词是reasons，且定语从句缺少状语，所以用why引导定语从句，在从句中作原因状语。选A。
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