—What _________you_________last week?         

—I bought a bag.

某日晨7时36分，北京天安门广场举行了隆重的升旗仪式（日出时举行）．据此回答下题．

放久的馒头会长出“白毛”或“黑毛”，“白毛”或“黑毛”属于霉菌，它们来自（ ）

——I don't know if Aunt Li     to look after these“stay-home children”tomorrow morning.
——If he       ,I will phone you.