これ / それ / あれ + は / が / を / も どれ + が / を
これ, それ and あれ mean "this", "that" and "that over there", and どれ asks "which one". They stand for a thing on their own, so a particle follows them directly.
English "that" covers both. それ is for something near the person you are talking to; あれ is for something away from both of you, like a mountain you are both looking at.
これ stands alone. In front of a noun the word is この: ×これ本.
どれ asks "which one" out of three or more; for a choice between two, the word is どちら. As the subject, どれ takes が, never は.
These go beyond pointing at a thing you can see.
それ also points back to what the other person has just said.
あれ names a thing both of you know from before, though it is not in sight.