Meeting a UFO is an_____ [usual] experience

Meeting a UFO is an_____ [usual] experience Mr.smith is an_(America)d0ct0r Perhaps there is a meeting, That is a UFO.改成否定句 A UFO is on the sky用A还是the.UFO前 There is a meeting 变将来时 There is a meeting 变将来时 The youth is a beautiful meeting是什么意思? there is a meeting today?的过去式 In the morning,my mom gives me a/an_(1)_as a gift.This is because I got a good score on my_(2)_exa(1）一件物品（2）subject 紧急英语翻译:他是一个动作片演员:He is an_ _ _. an UFO还是 a UFO Is that a UFO or a plane作两种回答 There is a school meeting today.(用tomorrow改写句子) There is( )( )( )a school meeting tomorrow. What's this in English?回答?有3个选择：1.It is the UFO.2.It is a UFO.3.It is an UFO. There is a meeting every week.用tomorrow改写There ( ) ( )a meeting tomorrow. Mrs white is having a meeting同义句Mrs white___ ___ a meeting ( ) a meeting