1. I had no idea that she was a thief. 2. He has no idea how to operate these machines. 3. I have no idea what time it is.
II. DIALOGUES: Teacher 1: Have you met the new student Sally? Teacher 2: Yes, she is a very nice girl. Teacher 1: I kept asking her questions in class today, but she wouldn’t respond. Teacher 2: That’s because she is hard of hearing. Teacher 1: I had no idea she had a hearing problem. Teacher 2: It’s not too serious. You should make her sit in the front of the class so she can hear you better.