As your instructor advised you ought to spend your time on something______ researching in

外语类 专四 已帮助 人

As your instructor advised, you ought to spend your time on something______ researching into.

A.precious

B.worth

C.worthy

D.valuable

请帮忙给出正确答案和分析,谢谢!

热搜:在Sb2S3,HgS,Bi2S3,As2S3,SnS等物质中,不能溶于Na2S溶