YOU SAID:

i put a tube in my mouth

INTO JAPANESE

私は私の口にチューブを入れて

BACK INTO ENGLISH

I put the tube in my mouth

INTO JAPANESE

チューブを口に入れた

BACK INTO ENGLISH

Put the tube in your mouth

INTO JAPANESE

チューブを口に入れてください

BACK INTO ENGLISH

Put the tube in your mouth