Please tell me.
Please tell me where your favorite place is.
I'm not sure.
I'm not sure why it happened suddenly.
He doesn't tell me.
He doesn't tell me how much this bag is.
Nobody knows.
Nobody knows why James left the office.
We want to know.
We want to know why he is so upset.
Could you tell me?
Could you tell me when the next train comes?
Ralph’s mother knew.
Ralph's mother knew where he kept the book.
The doctor will ask you.
The doctor will ask you what you ate for breakfast.
I can't remember.
I can't remember where I put it.