Answer:
I will explain to you when to use these relative pronouns and then you can probably figure the answer out yourself. It's pretty simple!
Explanation:
Where: This relative pronoun refers to a place, such as the White House or the moon. "Where is my phone?"
When: This is about time. It can be at 12:00 in the morning, Tuesday, or even 1987. "This morning <em>when</em> the bus arrived, I wasn't ready so I missed it.
Who: This is about people. It can be soldiers, astronauts, students, etc. "The students, <em>who</em> were late to class, sat down 10 minutes before the final bell."
Which: This is about the difference between multiple things. For example: "Which should I use to eat dinner, the spoon or the fork?" This can also be used to talk about a place. "My house, <em>which</em> is very large, is a couple blocks away from school."
Why: This is when you want to ask for what reason. "<em>Why</em> isn't the the food warmed up yet?"
Whose: This is when you are asking if something belongs to someone. "<em>Whose</em> pencil does this belong to?"
Now, when you do the answers, look for the things that the relative pronouns are referring to. For example: "when" is talking about time. So, you look at answers that refer to a certain time. This works for #2. "The moment when..."
"Moment" is a unit of time, so it works for "when."
I'll go over #1 also.
"This is a restaurant..." OK, so we know that "restaurant is a place. So, that rules out when, which is time, who, which is people, which, which is different things, why, which is a reason, and whose, which is belonging to.
This works for "where." It is talking about where this restaurant is.
