YOU SAID:

do you have a pen that i can use

INTO JAPANESE

私が使えるペンはありますか

BACK INTO ENGLISH

Do you have a pen that I can use?

INTO JAPANESE

私が使用できるペンはありますか?

BACK INTO ENGLISH

Are there any pens I can use?

INTO JAPANESE

使用できるペンはありますか?

BACK INTO ENGLISH

Are there any pens I can use?