求下面式中的x：64（x+1）3-27=0
(x+1)3=2764
∴x+1=34
解得x=-14．
---What did you say to Julia? I saw her crying in the dormitory alone.
--- It ______ my fault. We talked happily when I was with her in the classroom.
A．mustn’t have been
B．should have been
C．shouldn’t have been
D．couldn’t have been
