They are arriving in Beijing next Sunday.,为何是are arriving而不是

They are arriving in Beijing next Sunday.,为何是are arriving而不是 They are arriving ()Tokyo next Sunday I know you are arriving next sunday l know you are arriving next Sunday的中文翻译 I know you are arriving next sunday什么意思 i know you are arriving next sunday 为啥arriving后面要加ing my pen pals are arriving in Jingzhou next Sunday.为什么arrive要改 I know you are arriving next sunday.为什麽arrive是ing形式 We ____ in Harbin next week.A.are arriving B.to arriving C.a I know you are arriving next sunday .这句英语中arriving为什么要用ing 形 I know you are arriving next sunday,应该是I know you are going l know you are arriving next sunday.letme tell you the way t