Before you hand in your test paper,please doublecheck if you write down your name,your class andgrade and your student number.
在上交试卷之前，请再次确认你是否填写了姓名，班级，学号。
A:Did you double check it?
你再次确认了吗？
B:No worry,there would be no problem.
别担心，没问题。
A:Did you close the door?
你关门了吗？
B:Yeah,but I'll go and double check it.
是的，但是我要再去确认一下。