As your instructor advised, you ought to spend your time on something ____ researching into.
(A)precious
(B)worth
(C)worthy
(D)valuable

答案：B
難度： 困難

Darrell Lin 國三上 (2012/09/04)
(C)worthy, 一般會加上 of, ex: worthy of Ving.

檢舉

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