6Conversation partner, the other party
あいて
8to get along with someone
なかがいい
9To not get along with someone
なかがわるい
10To come for class late
授業におくれる
11To be noisy at night
よなかにさわぐ
13To play the piano
ピアノをひく
15To write graffiti on the wall
かべにらくがきをする
17For shoes to get dirty
くつがよごれる
18to give (someone) trouble, to inconvenience (someone)
めいわくをかける