There is a difference between live off and live on. I would choose 'live on'; (i) fleas 'live on' blood and cows 'live on' grass. (ii) fleas 'live off' humans and cows 'live off' meadows. i.e. you live on your food and live off the source of your food. Compare with, A: "He has no money of his own yet he lives on caviar and champagne!" B: "I know. He lives off his parents' money. :)

“All to myself “ refers to the subject receiving what is being given: “I keep my secrets all to myself”. “All for myself” refers to what is being given. However, both have the same connotation most of the time :)

Mad and Angry are very similar to each other, however, Mad is more used in the UK than it is in the US. Angry is a more generalised form where it’s related to to one’s humour and Mad is related to a state of mind. Therefore, Mad is a synonyms for Crazy and Angry has another connotation itself. Some will say “the dog went mad”, meaning “sickly crazy”.

You could say:

It's been a long time since the last time I wrote an email

or 

It's been a long time since the last time I read my mail.

It will change depending on what you'd like to say.

Take a look at my profile and maybe we could have lessons to enhance your vocabulary!

- Gilbert.

Do you want to do the TEST again?

I think you didn't have a chance to say : No, I don't. :))
Today I did a test. The TEST only said the truth about me, so I decided to share it with you. I will show you pictures of a few doors, pick one of them.