问题补充：
、Amy thought it was to read English newspapers every day so she subscribed to（订阅）the 21st Century.
A. worth
B. worthwhile
C. worthless
D. worthy
答案：
A. worth
(答案→)B. worthwhile
C. worthless
D. worthy
解析：
试题分析:考查形容词辨析。worth“值得”，后面跟名词，动名词或者钱；worthwhile“值得”，往往用于it is worthwhile to do/doing结构中;worthy“值得”，用法有be worthy of doing/n或者be worthy to be done;而worthless“没价值的”，由句子结构可以判断B选项正确。句意：艾米认为每天读英文报是值得的，所以她订阅了二十一世纪报。
