Question

D. Combine the following sentences using noun clauses.
1. I don't know. What kind of a battery is this?
2. My brother doesn't know. How tall is he?
3. I am not sure. Which chapter are we on?
4. Scientists claim. They will cure cancer.​

Answer 1

Answer:

1- I don't know which kind of battery this is .

2- My brother doesn't know that how tall he is.

3- I am not sure about which chapter are we on.

4- Scientists claim that they will cure cancer.