6．Listen to the passage and tell whether the following statements are true or false（判断下列句子是否符合你听到的内容，符合的用"T，表示，不符合的用F；表示）：
15．The passage tells us five students'special homework for the winter holiday．
16．Liu Tongtong couldn't play on his phones for at least a week this winter holiday．
17．Yang Qiushi learned how to recognize crops like wheat，peanuts，potatoes from the leaves．
18．Li Jie's teacher asked them to learn a skill from their grandparents as their homework．
19．Taking exercise every week and taking photos of it was Zhou Zirun's homework from his class teacher．
20．From the passage，we know that the special homework brings students a lot of fun．
