He worked out the problem by h .No one helped him.
He worked out the problem by h .No one helped him.
No one ___me worked out the math problem.
He had worked out the problem when Jim called him
He worked out the math problem f__.
He worked out the math problem ( )如题
he has worked out the problem.的被动形式
Finally,he worked out the problem.(改为同义句)
The problem is difficult,( )he has worked it out.
John still can't work out the problem __I have helped him se
I'll leave him ____ out the problem by himself.
No one ___ philip could work out the difficult problem.
no one()philip couid work out the difficult problem