“绿叶在光下制造淀粉”实验的相关叙述中不正确的是（　　）

请根据中文提示，完成下列句子，每空一词。
____ You must ________ _________ (照看)your things.
____ My classmates are ________ _________ (谈论) the Great Wall .
____ Don't ________ _________ for school.(迟到)
____ She usually ________ _________(看电视) on Saturday evening.
____ You must go to school ________ _________. (按时)