be on a meeting还是be at a meeting?

be on a meeting还是be at a meeting? there will be held a sport meeting还是there will be a sport meeting I am afraid there___(be)a meeting this afternoon.填will be 还是is going to be,为什么? There is going to be a class meeting tomorrow morning.Please come on time.甚么意思 There is a meeting on the playground.(改成be going to结构） There __________ (be) a meeting tomorrow afternoon There ____(be)a meeting this evening There( )(be)a meeting next week there ______(be) a meeting next week be at a meeting什么意思 Be careful about a meeting是什么意思 there will be a sports meeting.,isn't there还是 won't there? be on a visit Be on a diet the meeting will be held --next Monday.that is so say ,---Aug.2ndthe meeting will be held -----next Monday.that is so say ,-------Aug.2nd A.on,on B.on,in C.不填,on.,为什么 翻译 a meeting held / a meeting being held / a meeting to be held 是there is a sports meeting next week对 还是there will be a sports meeting next week对这是一个连词成句原题是这样的：sports,there,a,next,meeting,be,week. You should be on time for this meeting(改为同义词) You should()()（）for this meeting