although it's not easy to tell_______ it's good or bad.

问题描述:

although it's not easy to tell_______ it's good or bad.
a if b.whether

这不是一个句子吧,后面应该还有的.
就这里而言,应该用whether,因为后面有or bad.whether... or...是……或……
I don't know whether it is good or bad.