I don't know.Must the medicine be kept cool,clean and dry?合并为一句

I don't know. “i don't know you know i don't know I don't know when he ____,I must talk to him when he____.(come) i don't know what danger___(face).So i must get everything well填什么啊 when i can go abroad?sorry,i don't know .maybe you must study hard. sorry,I don't know. i don`t know much I don't really know. 英语；I don't know I don't know miss I don't know him. I don't know now 翻译 i don't know So know,I don't I don't know her i don't know anything I don't know the answer, you must ask somebody____(另外的) Thoughts of you I don't you know,but you must be happy.Really,you must be happy!