1. I can tell you all that he told me last week.
2. Ahead of me I saw a woman who/that I thought was my aunt.
3. Do you know the girl who/whom/that he often talks to?
4. I’m one of the boys who/that are never late for school.
5. Who is the girl that is wearing a red dress?
6. George Orwell, whose real name was Eric Arthur, wrote many political novels and essays.
7. Is oxygen the only gas that helps fire burn?
8. Do you have any idea that is actually going on in the classroom?
9. It is the third time that you arrived late this month.
10. He always tells lies, which makes his parents angry.
