The problem is too hard.I haven't ( )the answer A.WORKED ON B.wor_英语解答

The problem is too hard.I haven't ( )the answer A.WORKED ON B.worked for C.worked out D.worked off
在括号中填选项

人气：385 ℃　时间：2020-06-12 04:04:27

解答

C,
work out为计算出,可以解决的意思,