He hasn't worked out the maths problem at
初二英语改同义句!He worked out the maths problem in ten minutes.
somebody worked out the maths problem.改为否定句
He worked out the math problem f__.
At last he ______(success) worked out the difficult Maths pr
I don't understand the way_____they worked out the problem.
He worked out the math problem ( )如题
he has worked out the problem.的被动形式
He had worked out the problem when Jim called him
Finally,he worked out the problem.(改为同义句)
The problem is difficult,( )he has worked it out.
___professor as he was,he couldn' t work out the problem at
He isn't clever, is he? ________He worked out the