YOU SAID:

i me my mine is am are was were he she it they on at in

INTO JAPANESE

私は自分のものは自分のものであると信じていますが、彼はそれを自分の家で着用していたのでしょうか？

BACK INTO ENGLISH

I believe my stuff is my stuff, but was he wearing it in his house?

INTO JAPANESE

私のものは私のものだと信じていますが、彼は家でそれを着ていましたか？

BACK INTO ENGLISH

I believe my stuff is mine, but was he wearing it at home?

INTO JAPANESE

私のものは私のものだと思いますが、彼は家でそれを着ていましたか。

BACK INTO ENGLISH

I think my stuff is mine, but was he wearing it at home?

INTO JAPANESE

私のものは私のものだと思うが、彼は家でそれを着ていたのか。

BACK INTO ENGLISH

I think my stuff is mine, but was he wearing it at home?