①葡萄糖 ②蔗糖 ③胃蛋白酶 ④RNA．

根据短文内容和括号内所给汉语意思，写出空白处各单词的正确形式（每空一词）。

    I have a good friend. ____(她的) name is Linda. She has a ____(紫色的)backpack. It is on the ____(沙发). She has two red ____(词典). They are on the desk in her ____ (房间). She has a yellow ____ (帽子). It is on her bed. Look, the ____ (照片) is on the wall. There are ____ (四) people in her ____ (家庭). They are her parents, Coco and her. Coco is the ____ (名字) of a dog.