I notice that Americans use the word 'gotten' when we in Britain just use 'got' - is 'gotten' accepted American English, that is, used and accepted in English examination papers, or is it a type of slang, used in speech, but not written?
The previous answer you directed me to doesn't quite answer my question, although it was interesting. I can deduce from it, however, that 'gotten', if used correctly, is indeed acceptable and an actual word, is that right?