如下：The exercise is very difficult.We can't work it out.(合并为一句）The exercise is_________difficult for us__________work out.
问题描述：
如下：
The exercise is very difficult.We can't work it out.(合并为一句）
The exercise is_________difficult for us__________work out.
答
The exercise is too difficult for us to work out.
这道题太难而我们做不出来.
用too to 句型表示 太``而不能``.
答
The exercise is___too__difficult for us____to___work out.
答
The exercise is too difficult for us_to work out
too to 太……以至于……
这个练习题太难了,以至于我们不能把它解出来.
答
too to