During the days ___,he worked as a servant at the Browns.

题目

During the days ___,he worked as a servant at the Browns.
A.followed
B.following
C.to follow
D.that followed
为什么?
请详细说明每个选项.

答案

That 引导定语从句,followed 修饰the days,that 不能省略,排除A.
如果是B,应该是During the following days,或者During the days that is following.
C,to follow 是动词,用在这里说不通