YOU SAID:
I"m very bored in a Biology class
INTO JAPANESE
私は生物学のクラスにとても退屈しています
BACK INTO ENGLISH
I am very bored with biology class
INTO JAPANESE
私は生物学の授業にとても退屈しています
BACK INTO ENGLISH
I am very bored with biology classes
INTO JAPANESE
私は生物学の授業にとても退屈しています
BACK INTO ENGLISH
I am very bored with biology classes
That didn't even make that much sense in English.