i left my pen on the dask and now it isgone ,who has taken为什用has taken 不用had taken

I left my pen in the taxi.I have left my pen in the taxi.哪个是正确的 如果都正确 请说明有何不同 i left my pen on the dask and now it isgone ,who has taken为什用has taken 不用had taken I forgot my pen at the moment and left it in my room.这句话怎么翻译? I've left my gloves on the bus的left是神马意思? I left my pen at home可以写成 I left my pen home home是个副词不是吗? I forget my pen when I left my room(改为同义句) I < .> my pen in my room. I left my pen on the desk and now it’s gone; who _____ it?A.took B.has takenC.will take D.had taken为啥D不行呢 根据选项填空:went,gone,has gone;has taken,had taken,took I left my pen on the desk and now it is _;who _it?请给出解题详情. I left my keys on the table in my office还可以怎么说把left换掉 This is your pen._______is on the desk.A.my b.I c.me d.mine I put my pen ＜on the desk＞.提问哪为好新人帮帮我 Who _____ (take) my pen?I _______ (put) it on the table just now. The moment I got home,I found I _________ my jacket on the playground.A.had left B.left C.have left D.was leaving 英语翻译I 【 】【 】my pen【 】in the bag. My pen pal and I often talk（）单项选择 on phone by the phone on the phone in phone 适当形式填空Oh,I _(leave) my pen in the classroom为什么用left而不用have left答案上是left,老师说是have left下面一句是Don`t worry.I_(get) it for you I left my wallet sitting on the hood of a rental car once The pen i ＿＿(think)i ＿＿(lose)is on my desk ,right under your nose.