The teacher gave us so difficult a problem as we couldn't so

The teacher gave us so difficult a problem as we couldn't so the teacher gave us so difficult a problem as most of us can I gave that boy so difficult a math problem ____ he couldn’t The problem was so difficult that we couldn't work it out ea our teacher set us such a difficult maths problem we couldn' The math problem was so difficult that I couldn't work it ou .The joke told by Tom made us _____,so the teacher couldn’t The teacher set so difficult an examination problem( )none o the problem is so difficult（ ） we can't work it out 英语改句子The math problem is so difficult that we can't work it Our teacher set us such a difficult math problem _we couldn' This problem was so difficult they couldn't solve them.改写句子