I did not know if they had sold the picture.
I wondered if they knew anything about it.
She asked me if Jack had given me his telephone number.
I was not sure if he was coming back that day.
She asked me if I had found the book.
The man asked if there were any more books there.
I wanted to know if she had gone shopping the day before.
He did riot ask her whether she had bought the dictionary.
I doubted if she knew the name of the man.
I asked if Boris had seen the man that morning.