detention

Every time i fell my spelling and dictation test or verb test i have to go for detention at luch time for a weekand sit outside the staff room. If after one week of detention but I keep felling the test then i have to keep going for detention. When i go for detention last week i bought a pack colaand when Miss Serene saw it she asked me to throw it away, my friend Vinh also bought a pack of cola but Miss Serene didn't see it so he don't have to throw it away. But when Miss Tram came there is a boy that also sit for detention like us and he tell MissTram about Vinh hidding his pack of cola and when Miss Tram saw it she asked Vinh to throw it away.