反正做不出来,着急的说:“快要放学了,”" i clapped the table and said,我快要做完了,说:“我做出来了,老师好象看穿了我的心思, how to do this problem? it s so hard. i can t do it. " i think i can t do it anyway. i ll think about it after i go home! the teacher arranged us to do several questions in th