some maths problems in this book are __difficult for the studentsto work out可以填enough

分类: 作业答案 • 2022-09-27 12:10:56

问题描述：

some maths problems in this book are __difficult for the studentsto work out
可以填enough

答

不可以,语法上来说enough应该在形容词后面：difficult enough
另外不要用中文的思维,虽然意思可以是“题目足够困难”,但也用enough也不合适,too..to是固定搭配