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which (of three or more)
well; now; c'mon
「何れ」 has another reading with different meanings.
which; where; who
お菓子かしはどれにしますか。
Which snack will you have?
どれも美味しおいしそうで迷っまよっている。
They all look delicious and I can't decide.
どれが自分じぶんの荷物にもつか分からわからなくなった。
I couldn't tell which was my luggage.