Is tjis factory some foreigns visited yesterday?A.that B.whereC.whichDthe one请解释并翻

空格在factory后边吗？
如果这样选择B，把句子还原为陈述句就是
This factory is WHERE some foreigners visied yesterday.
不过感觉用出题者本意是要你选择D：
This factory is THE ONE (THAT) some ....
THAT是不应该省略的（一般主语中后置定语的that才可以省略），但是错误的题目也不少哦。

横线应该是在factory后面吧，选D。主语是this factory,把一般疑问改成陈述句来看，就是this factory is____some foreigns visited yesterday?
D。the one肯定是正确的，some foreigns visited 作the one的定语，因为the one在some foreigns visited 中作宾语，所以中间的which,that可以省掉。