Try to sit up straight and pay attention to your teacher!
Try not to move all over the place during your lesson!
ーDon't give your teacher a hard time!
「先生を困らせないの！」
to give someone a hard time で「人を困らせる」
ーTry to sit up straight and pay attention to your teacher!
「ちゃんと座って先生に注意を向けなさい！」
to sit up straight で「ちゃんと座る」
to pay attention to で「人に注意を向ける」
ーTry not to move all over the place during your lesson!
「レッスンの間、動き回らないの！」
to move all over the place で「あちこち動き回る」
ご参考まで！
カナダ 
