关于at first first of all 等的区别
例如该句中:
If you want to pass the exam,(____),you must work hard.
a.at first b.at the beginning c.first of all d.from the beginning
请告诉我这四个词的区别所在以及它们在使用时可以在句子的哪些部分出现,
希望您们被去COPY人家已经回答过的答案哦!