Berilah contoh kalimat dari kata by,for,before,after,since,at.during (1 kata 3 kalimat )

By= i go to school by bus
for=what are you looking for?
before= before you go to sleep, you must brush your teeth
after= after that, please help me to finish my homework
since= she had an english  course since 2008
at= at my school, there are many extracuricular