My pen was lost.的同意句是什么.我刚来没有多少分

我的笔已经丢了.

My pen was gone/missing.都行

My pen is missing.
lost是瞬间动词所以用过去式 missing 也是丢了 不过是形容状态的 现在已经丢了 所以可以用现在式
My pen is missing.

I lost the pen.
I cannot find my pen.

My pen was missing.
My pen was gone.
I lost my pen.

不确定诶
可能是
I lost my pen

我的笔丢了

My pen was lost.
My pen was missing.
I've lost my pen.
I can't find my pen.
这些都可以啊.自己选个合适的吧!

I left my pen somewhere.
I droped my pen.
My pen has been gone.