work out,put up1.i thought hard,and______the math problem at

work out,put up1.i thought hard,and______the math problem at work out,put up 1.i thought hard,and______the math problem a i can't work out the hard math-------选question还是problem,说明为什 the math problem is too hard to work ------out 几个英语问题1、-Dad,I work out the math problem at last.-__________ I try( )work out the math problem by myself I found()impossble for()to work out the math problem I thought it( ) me to work out the problem. 英语句子改错：That is too hard for me to work out the math problem. The math problem is so hard that we ean't work it out. The m At first i thought that math problem would be rather difficu -I can it work out the math problem.What should I do?-You sh