Suru vs Yaru
Aside from all the verbs which are formed with 'suru', such as benkyou suru etc, I don't really understand the difference between
Suru and Yaru. For example, if someone asks "shukudai wo shimashita ka", could I answer "mou yarimashita"? Or "mou shimashita"?
Onegaishimasu! (Kana shika yomemasen)