please just a simple question

[Unregistered]

Hello every body
Sorry for my english
I have just study english in three years
My question is does you say
"Have you lost your keys in the school"
OR
"Do you lose you keys in the school"
Or something other
I am so bad in english and I mix things together
I wish please I need the answer as soon as possible

[David L.]

Hello everybody
Sorry about my English but I have only studied English for three years.
My question is, do you say?:
"Have you lost your keys at school?"
OR
"Did you lose your keys at school?"
or something else.
My English is still not very good and I mix things up.
I hope you can reply quickly please as I need the answer as soon as possible.

Both of your questions (as above) are now grammatically correct and what a native speaker might say.
We would use "in" like this:
"Have you lost your keys in the school playground?"
"Did you lose your keys in the school playground?"