First write your name ________the top of your paper.then start___your workA,on,withB,on,forC,at,\d,at,for

First write your name ________the top of your paper.then start___your workA,on,withB,on,forC,at,\d,at,for
First write your name ________the top of your paper.then start___your work
A,on,with
B,on,for
C,at,\
d,at,for

First write your name ________the top of your paper.then start___your workA,on,withB,on,forC,at,\d,at,for
at the top of 在……的上面,属于同一个物体,on the top of 在---的上面,不属于同一物体,因此用at .start for (some place) 是指动身往某处
,因此这里不能用FOR,应该是START YOUR WORK,答案是C.

A write... on在。。上写
start with开始（工作）

不懂

A
write... on在。。上写
start with开始（工作等）