First,some math problems are hard ,so they can't work ____ou
First,some math problems are hard ,so they can't work ____ou
The math problems are too hard for any one of us to work out
I work hard so that I can get the first
This math problems is not so --------(easy) i can work it ou
they are some difficult math problems.改为单数句 ____ ____ diffic
The math problem is so hard that only ( ) of us can work it
The math problem is so hard that we ean't work it out. The m
Some people are so sick of hearing about Li that they can't
Jack is busy _____ (work on)some math problems.
i can't work out the hard math-------选question还是problem,说明为什
they work very hard so that they can help__ (many/ much) mor
1.The math problem is so difficult that I can't work it out.