My book is the one ________ fell on the floor.
Is used when talking about people.
Who/ that
Who is going to the soccer game tomorrow?
Who
The boy who was fishing is my brother.
Yes, this is correct.
She is the girl ______ I was telling you about.
who/ that
Is used when talking about things.
that/ which
I hit my knee on that table.
that
The picture frame who is broken is in the garage.
No, this is not correct. Change "who" to "that."
Who; that/ which
Is used to talk about people or things.
that
With who am I speaking to?
who
She is the girl which sold me the bike.
No, this is not correct. Change "which" to "who" or "that."
Students ______ study hard get good grades.
who or that
Sam knows a man _________ works for the president.
who or that
Sandra is the person who dropped that plate on the floor?
who and that
The movie ________ we saw last week won three awards.
that or which
She prefers to watch movies that make her cry.
that or which
She held out a hand who was hurt.
No, this is not correct. Change "who" to "that" or "which."