Just give a quick answer. Probably someone comes to explain these in detail. 私たち は 林 の 中 に 入って いった。 The literal translation would be like “We went into the woods.” 入っていった is the past form of 入っていく, and the opposite of it is 出て行く. Now you see, 入る here works rather as a preposition or adverb to show the direction. あなた は 何か スポーツ を して います か。 You’re totally right. The Japanese sentence asks WHETHER you play a sport or not. It is Y/N question. What is the 何か here? “Any” is the exact counterpart here, and depending on a sentence, “some” comes to be better. あなた は 何れ スポーツ を して います か。 Nope. I guess you read it as どれ, right? First, どれ is a pronoun, so you have to turn it into adjective, どの. Second, even if you use どの, then the options have to be shown like, “among these sports”. Third, in the modern Japanese, we don’t apply the Kanji to when to write どれ。Hiragana is fine. Oh, it ended up not to be so quick :)