What words replaces a noun clause?

You can't directly replace a noun clause with a single word. However, you can often simplify it by using a pronoun or a noun phrase that refers to the same idea as the noun clause.

Here's a breakdown:

Noun Clause: A group of words that functions as a noun in a sentence. It typically has a subject and a verb.

Example: *I know that you are right.*

Replacing with Pronoun:

* *I know it.* ("it" refers to "that you are right")

Replacing with Noun Phrase:

* *I know the truth.* ("the truth" refers to "that you are right")

Important Note: The replacement must accurately reflect the meaning of the noun clause.

Here are some more examples:

* Noun Clause: *What you said is true.*

* Pronoun: *That is true.*

* Noun Phrase: *Your statement is true.*

Noun Clause: *Why she left is unclear.*

* Pronoun: *That is unclear.*

* Noun Phrase: *The reason for her departure is unclear.*

Remember, the best replacement depends on the specific context of the sentence and the desired level of formality.