问题补充:
It is said that many kids are worried about the year , they think the earth will be destroyed by disasters.
A. when
B. where
C. as
D. which
答案:
(答案→)A. when
B. where
C. as
D. which
解析:考查非限制性定语从句。句意“据说有很多孩子都在担心,他们认为地球将会被摧毁。”本句是非限制性定语从句,“they think...”从句不缺少成分,故不用C、D;是时间,故用when。故选A。