YOU SAID:

I don't know why but you are acting suspicious

INTO JAPANESE

理由はわかりませんが、あなたは疑わしい行動をしています

BACK INTO ENGLISH

I don't know why but you are acting suspicious

INTO JAPANESE

理由はわかりませんが、あなたは疑わしい行動をしています

BACK INTO ENGLISH

I don't know why, but you're behaving suspiciously

INTO JAPANESE

理由はわかりませんが、あなたは疑わしい振る舞いをしています

BACK INTO ENGLISH

I don't know why, but you're behaving suspiciously