Dave : Hey Bintang, what did you get at the exam?
Bintang : Hey Dave, i got A.
Dave : As expected from a smart student! I onlygot D. I really want to improve my grade.
Bintang : You probably should study harder.
Dave : I don't know. I always get bad grade although i study harder.
Bintang : Hey, why don't we study together? That way i can help you out.
Dave : Good idea! im in
