Is he still staying at the classroom?staying为什么加ing

I think staying at home is really boring 中stay为什么要加ing? he is staying at a youth hostel 对staying后面的提问 i think he wil How long is he staying?He's staying ___ a week.A at B for C i may be staying a home.为什么这里stay加ing He is staying at home (because he is ill.)(对打括号部分提问) were staying at the same hotel David has( )much work to do that he is staying late at his o 问句___will Mr white stay at Paris 答语：he is staying there___ n It is no pleasure staying at home alone on weekends,so he al Is the fish stay alive还是 staying are you staying at Staying at home