It is such a difficult problem___nobody can work out.

It is such a difficult problem___nobody can work out. It is such a difficult problem___nobody can work out.为什么要用as He is such a clever boy that he can work out many difficult It is such difficult work that we can't finish it in a shout It is (such) difficult work that we can't finish it in a sho 9. It is such a difficult problem _______ no one can work ou It is _question that i can't work it out.A.a so difficult B. The problen is difficult.I can't work it out. The problem is too difficult .------student can work it out The problem is too difficult.Can you _____? A.work out it B. 高中英语题i can't work out this problem .it is a most difficult o The boy is so clever that he can work it out in such a short