Question

I don’t think it is __________taking the trouble to explain the question to him.

A. worth
B. worthy
C. worth of
D. worthwhile

Answer 1

答案D
be worth后的动名词要用主动表被动。与worth相似的worthy却不一样，其后不接动名词而接不定式(若接动名词则其前应有介词of)，且要用被动式表示被动含义。Worth是价值的意思，worthwhile值得做的，根据后面动名词短语作状语，故选D，