急！！！恳请英语达人帮忙详细解释一道英语选择题的答案，O(∩_∩)O谢谢！！！

Question

如题：Is this museum ___ you visited a few days ago?
A. where　B. that　 C. on which　 D. the one
PS：该题答案为D项，说是缺少先行词，我想不明白，我拙见是选B项，Is this museum ___ you visited a few days ago?这个句子可转变成=》You visited this museum a few days ago.那么this museum 就是原句中Is this museum ___ you visited a few days ago?的宾语兼先行词了。
请问我的理解哪里出错了，求详解，thank you so much!!!

Answer 1

这是定语从句的一个陷阱题（也是经典题）。做这种题先把疑问句改为陈述句。
就是this museum is ____you visited several mothns ago。
有主语，谓语。发现缺宾语。所以填the one充当先行词。后面是省略that的定语从句
但是。把这个句子改一下。
Is this the museum____you visited several mothns ago?
这是就要填that。which或不填。做定语从句的宾语成分
还有一种是
Is this the museum____you visited the airplanes several mothns ago?
这里就要填where或in which。因为the museum在定语从句中做地点壮语
所以要小心这类题

Answer 2

Is this museum ___ you visited a few days ago?

将这句话变成肯定句吧：
This museum is the one (that) you visited a few days ago.

this museum是主语 the one 是先行词

现在理解了吧

Answer 3

你要把这个句子转换成肯定句就容易多了，你给的句子只能是This museum is ____you visited a few days ago,你看一下是不是缺少先行词（也就是is 后面的表语），你选B的话题目改成Is this the museum…就行了，别小看一个the，因为有了它句子就变成This is the museum___， 这样先行词就有了，也就可以选B了
不懂请继续追问，谢谢

Answer 4

先换成陈诉句，因为museum是可数名词，所以这个this应该是修饰museum的，还原成this museum is____ you visited a few days ago.很明显后面是定语从句，前面缺少先行词，所以得选一个名词或代词了。只有the one合适。