Answer and explanation:
1. The word <u>will</u> could be in both gaps.
2. The word <u>would</u> could in both gaps.
3. The word <u>will</u> could be in both gaps.
4. The word <u>won't</u> could be placed in both gaps.
5. The word <u>will</u> could be placed in both gaps.
6. The word <u>will</u> could be placed in both gaps.
Answer:
When writing a restrictive clause, introduce it with the word "that" and no comma. However, if the subject is or was a human being, use "who" to introduce the clause. When talking about people in defining (restrictive) relative clauses, who is preferred to that.