Every week, I, to supermarket, for vegetables' shopping, go. [Syntax]

The correct answer is "かいもの" (shopping). The sentence talks about going to the supermarket every week. The particle "に" (ni) often indicates the purpose of movement when combined with verbs like "いきます" (go). So, "かいものに いきます" means "go for shopping". "やさい" (vegetables) is a noun, but "やさいに いきます" doesn't make sense; you go *to buy* vegetables. "の" (no) is a particle indicating possession or modification, not purpose here. It would connect "やさい" to "かいもの" (e.g., "やさいのかいもの"), but "かいもの" is the core purpose. If you put "やさい" or "の" at the star, the purpose of going is unclear or grammatically wrong. **Grammar Tip:** To express the purpose of going somewhere, you can use a noun + 「に いきます/来ます」 (go/come for [noun]).

正解は「かいもの」です。「スーパーへ、かいものに いきます」で「買い物に行く」という目的を表します。「やさい」は野菜ですが、「やさいにいきます」とは言いません。「の」は助詞で、ここには入りません。「やさい」や「の」を星の位置に入れると、文として成り立ちません。 **文法ヒント:** どこかへ行く目的を言う時は、名詞の後に「に いきます/来ます」を使います。