If Duo accepted that, would they automatically incorporate that answer into the reverse PT > Eng version too? Whilst I would say your answer isn't incorrect, it is somewhat archaic and would never recommend someone learning English to learn that usage, even as an 'alternative answer'.
I don't like the solution using the word 'like' as a replacement for about. While it is common slang. It should only be used in speech. I don't think Duo should be teaching it as a written or acceptable alternative to almost. Especially as English speaking school systems (personal experience teaching in the USA and UK) teach that it as an unacceptable contextual use of the word "like".