In the vocabulary list it gives “I’ll try to” “Trataré” but in the Challenge it is “I would try to ’ I´d try to” “Trataría”
Also I noticed “I would try to help him …” and “I would try to help you …” How can I tell the difference please?
Oh, good catch - looks as though there was a hiccup with the content listing - thank you!
For you/him in some of those situations - you’ll find that you pick it up from context, and if you don’t, it’s just one of those little things that sometimes you need to clarify by asking… 
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