Itisdifficulttojudgewhatwordsare

发布时间：2020-07-27 15:07:39

It is difficult to judge what words are _______ and what words are not．A.worth to look upB.worth being looked upC.worth looking upD.worthy of looking up

网友回答

C解析短语be worth后面要求跟动名词形式，且用主动形式表示被动的意思，而be worthy后的结构为of being done或to be done。
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