Here is a card,please_____.A.fill out itB.fill in it C.fill it outD.to fill it in

d

C.
fill in
Informal To provide with information that is essential or newly acquired:
【非正式用语】 提供消息：提供必需的或最近获得的消息：
I wasn't there—would you fill me in?
我不在那里——你能告诉我那的消息吗
To act as a substitute; stand in:
暂代：担任替补；临时替补：
an understudy who filled in at the last minute.
在最后一分钟才临时替补的演员
fill out
To complete (a form, for example) by providing required information:
填写：通过提供所需的信息使（例如形式）而完成：
carefully filled out the job application.
仔细填写工作申请
To become or make more fleshy:
长胖：变得或使变得更胖：
He filled out after age 35.
35岁之后他变胖了

b

B

B 填写（固定用法）
祁使语句,不能跟to(不能选D)
A也有填写的意思,但在这里用fill in更好

填写B fill in是填写的意思