请问I am on staff

请问I am on staff i am on it的意思请问I AM ON 请问I am strong when i am on your shoulders是什么意思啊 I am keen on I am on the I am on i am on fto i am working on 分析语法结构I am writing the letter in purpose of applying for your recently advertised position for a staff member 我知道主是I 、am writing 是谓 宾语是 the letter 请问后面的句子怎么分析 请问staff up or 请问I am broke. I am stuck on you! I am relying on you! i am down on my I am always on line I am tested on English. I am on the swim I am really gone on