YOU SAID:
My science teacher had a cow because i was web browsing
INTO JAPANESE
私はウェブブラウザだったので私の科学の先生は牛を飼っていた
BACK INTO ENGLISH
My science teacher kept a cow because I was a web browser
INTO JAPANESE
私はウェブブラウザだったので私の科学の先生は牛を飼っていました
BACK INTO ENGLISH
My science teacher kept a cow because I was a web browser
Well done, yes, well done!