Ling feng is really He can work out so many difficult math A

Ling feng is really He can work out so many difficult math A He is such a clever boy that he can work out many difficult 1.The math problem is so difficult that I can't work it out. the math problem is so difficult that he can'twork it out (改 So clever is he that he can work out all the difficult probl He is so w____ that he can work out this difficult problem e It is _question that i can't work it out.A.a so difficult B. Waht a b____ boy he is!He can work out the difficult problem This is so difficult a problem as no one can work out.as能不能换 the boy is very clever.he can work out the math problem in a The work is so difficult that he can't finish it in under a ---Is this math problem difficult? ---No, I can work it out