study hard coz在英语中是什么意思?

study hard at chinese是什么意思 lol和coz在英语书写中是什么的缩写?请举例 we students should study hard为什么hard要在study. 麻烦,英语改错I prefer to study with other students coz it's very h study hard "I Should Study Hard"英语作文 英语 Im not good at Maths I need___(study)hard 用study ,success ,good ,hard work 写一篇英语作文 study math really hard I must study hard? study hard 的用法 how to study hard?