This problem was so difficult they couldn't solve them.改写句子
This problem was so difficult they couldn't solve them.改写句子
This problem was very difficult.Lily couldn't ____
The math problem was so difficult that I couldn't work it ou
The problem was so difficult that we couldn't work it out ea
so such区别比如这个句子.It was ------difficult work that we couldn't
The mother was so excited that she couldn't say a word(改写句子,
This problem is so difficult that f_____ student can solve i
They were disguised so that we couldn't recognize them
The teacher gave us so difficult a problem as we couldn't so
______,they couldn't solve the mystery
1.This problem is so hard_____(solve).
I gave that boy so difficult a math problem ____ he couldn’t