Question

2. That we will lose is certain. 3. I think you are making a big mistake. 4. She says that she is not interested. (separate main clause and noun clause)

Answer 1

Answer:

2. Noun Clause - That we will lose.

3. Noun Clause - you are making a big mistake.

4. Noun Clause - that she is not interested.

The rest of the sentence is the main clause.