Some questions about noun clauses
Actually no one has ever taught me this kind of grammar . I learnt it from books&conversations. Therefore, I got some questions that I want you guys to solve them.
1) Can the following sentences be exchanged? Tell me the reason, why or why not .
a. This is a dumb question that I don't wanna answer.
b. This is a dumb question which I don't wanna answer.
My opinion is that "that" can replace all the words that start with "wh". Is that correct?
2) what kind of tense I should use after that/wh-. Is there anything I must follow?
3) I know "the one" can be meant for everything. So which word should I use after " the one"? "that?who?which?" or it depends on the context?
Thank you guys so much!!
By the way, I found that teachers don't teach students grammar even in united states. They just give me lots of assignments and I have to learn it by myself.