YOU SAID:

I'm supposed do be doing homework, but I do this instead

INTO JAPANESE

私は宿題をすることになっていると思います

BACK INTO ENGLISH

I think that I am to do my homework

INTO JAPANESE

私は宿題をすることだと思います

BACK INTO ENGLISH

I think that I will do my homework

INTO JAPANESE

宿題をすると思います

BACK INTO ENGLISH

I think I will do my homework

INTO JAPANESE

私は宿題をすると思います

BACK INTO ENGLISH

I think I will do my homework