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