I have been in CZ since last year.这话对么?been in后可加since吗

I have been in CZ since last year.这话对么?been in后可加since吗 I have been in. I have been there,have been 是have been in还是have been to的缩写? i have been studying history in china I Have Been In You 歌词 I have been in the Secret Love 春光乍泄 I have been in you 歌词 i have been in changsha now. I have been in 地点作文 I have been (i ) in keeping fish for two years i have never been here还是i have never been in here Never in my life ___ in that manner.A.have I been spoken to B.have I been spoken C.Ihave been spokenD.I have been spoken to I have been sleeping all alone,you have been straing in my i might have been in love before 翻译中文 阅读理解I have always been intersted in making things I'm sure have already been in love with you I might have been in love before是什么歌 Company, whether you need, I have been in什么意思