So, 'big' and 'tall' are both 'grand'? Are there other words to make the difference clearer?
Grand is used for big/large in many situations, including "a large fries". When applied to people it specifically means tall. You could try "il est grand est mince " - he is tall and thin; or "il est grand est gros" - he is tall and fat.
So if you wanted to talk about a guy who is big in general, how would you say that?
I do not know why "quite" is not accepted.
Assez, plutôt, and franchement are "quite". Source.
I put "He is really tall" and it was marked wrong.
C'est tres grand?
why can't it be ' it is very tall'