I have to turn to my teacher for help, b
问题:
I have to turn to my teacher for help, because this math problem is rather difficult______.
A.worked out
B.to be worked out
C.working out
D.to work out
I have to turn to my teacher for help, because this math problem is rather difficult______.
A.worked out
B.to be worked out
C.working out
D.to work out