同义转换1、The problem was very diffult.Nobody could answer it.

同义转换1、The problem was very diffult.Nobody could answer it.
The problem was _____ difficult ______ ______ ________ work it out.
The problem was _____ difficult ____ ___ ___ work out.
The problem was ____ ___ ____ for __ to work out.
It was ___ ___ ____ problem that ______ ________ work it out.
2、You can't finish the job in such a short time.
It's _______ _______ _________ to finish the job in such a short time.