Glad to see you back.How long_____in Russia?A.did you stay B.have you stayedC.were you staying D.have you been staying答案应该选A,为什么不能选其他几个?请说明原因,

Glad to see you so glad to see you Glad to See You 歌词 here/to/see/You/glad( .) HI,GAOWEI!GLAD TO SEE YOU AGAIN. I am very glad to see you I am____(glad gladly)to see you Glad to see you!什么意思? Glad to see you可以怎么回答? 翻译pass here glad to see you glad to see you here 快, Nice to see you back Glad to see you back!How long ________ you _________ in Europe?–Three months.I'm off to SouthGlad to see you back.How long_____in Russia A.have stayedb.did stay两个问题的区别 be glad to see i'm so glad to see you,you Glad to meet you与Glad to see you的区别 问下glad seeing you和glad to see you 的区别 104.I am so glad to see you back in Beijing and how long _______ in New York.A.have you staye104.I am so glad to see you back in Beijing and how long _______ in New York.A.have you stayed B.did you stay C.do you stay D.will you stayd