是on the meeting还是at the meeting,那么assembly呢?

是on the meeting还是at the meeting,那么assembly呢? in the meeting 还是at the meeting in the meeting还是on the meeting Can he____something at the meeting ?是speak还是Say? be on a meeting还是be at a meeting? 有一道简单的问题要`````是say at the meeting 还是speak atthe meeting? He will speak__.A.at meeting B.in the meeting C.on the meeting D.at the meeting 应该是in the meeting 还是 at a meeting? 请问“On the conference”、“At the conference”、“In the meeting”、“At the meeting”哪个正确? meeting前用的介词是on,at还是in? 求助! Be patient the meeting will come to an end at onceBe patient the meeting will _______ _______ at once是be ended 还是 be over Many quertions ( )at the meeting.括号里面是填came up还是were risen?为什么? The meeting Rooms are on the ground floor是The meeting Rooms are on the ground 是on the crossing还是at the crossing 是on the table还是at the table同上 是knocked at the door还是knocked on the door 是on the contest还是at the contest,求讲解. 是on the moon 还是at the moon