YOU SAID:

i like to play basketball in the gymnasium at my high school

INTO JAPANESE

私は高校の体育館でバスケットボールをするのが好きです

BACK INTO ENGLISH

I like playing basketball in the high school gym

INTO JAPANESE

私は高校の体育館でバスケットボールをするのが好きです

BACK INTO ENGLISH

I like playing basketball in the high school gym