that

Look at that picture.

【Translation】Look at that picture. 【Explanation】Imperative sentences (commands) begin with the base verb: [Look + at + Demonstrative (that) + Noun (picture)]. The correct order is 'Look at that picture.' The 3rd word (★) is 'that'.

【和訳】あの写真（または絵）を見なさい。 【解説】「〜を見なさい」という命令文は、動詞の原形から始まり【Look ＋ at ＋ 指示代名詞 (that) ＋ 名詞 (picture)】の語順になります。正しい文は「Look at that picture.」となり、3番目の空欄（★）には「that」が入ります。