They needed to work out the problem with the computer
They needed to work out the problem with the computer
work the problem out
The twins fails to work out the maths problem.
They needed to climb up the tree with (提问)
I find the problem difficult to work out.
He is busy to work out the difficult problem. 改错
He often o to help me work out the problem.
I found that diffcult to work out the problem 改错
I found()impossble for()to work out the math problem
the math problem is too hard to work ------out
It is___(easy easily) to work out the problem.
The problem is difficult for me to work out.