Transformation of sentences with the adverb 'too'

1. It is never too late to mend.
Ans - It is never so late that it cannot be mended.

2. My heart is too full for words.
Ans - My heart is so full that i am out of words.

3. He was too late to hear the first speech.
Ans - He was so late that he couldn't hear the first speech.

4. The boy was too old for a whipping.
Ans - The boy was so old that he should not have been whipped.

5. The tree is too high for me to climb.
Ans - The tree is so high that i cannot climb it.

6. He is far too stupid for such a difficult post.
Ans - He is so stupid that he is not fit for such a difficult post.

7. She was sobbing too deeply to make any answer.
Ans - She was sobbing so deeply that so couldn't make any answer.

8. This fact is too evident to require proof.
Ans - This fact is so evident that it does not require proof.

9. The work is too much for any man to do single-handed.
Ans - The work is so much that no man can do it single-handedly.

10. Her dress is too striking not to attract attention.
Ans - Her dress is so striking that it attracts attention.

Are these fine? OR Are their any other better alternatives?

**NOTE - The main instruction for assessing these answers is that - the question statement should be changed to the least extent. The more the changes/additions to the question statement the more is incorrect it becomes.