@flowermusickids Lunch, for sure.
Plus masking alone (even decent masks) is probably not enough to cram people in a room several hours a day five days a week. Not many schools are really on top of ventilation, testing, isolation (and not sending people back while still contagious) etc.
@当然，这是我的午餐。
再加上仅仅用面具（即使是像样的面具）可能不足以让人们一周五天每天在一个房间里挤上几个小时。没有多少学校真正做到了通风、测试、隔离（以及在传染时不把人送回去）等。