用too...to,so...that,not...enough造句,除.不能上学,太重以至于搬不动

These questions are enough difficult that I can't answer them.

The box is too heavy to carry.
The box is so heavy that I can't carry it.

I am too tired to go shopping
The exam is so diffcult that no student can do that
I am not bright enough to solve the problem

The box is too heavy to carry.
The box is so heavy that I can't carry it.
The box is not light enough for me to carry.