1. I know the people live in that house. (Correct)(Incorrect)
I know the people who live in that house. (Correct)
2. The house in he lives belongs to his aunt. (Correct)(Incorrect)
The house in which he lives belongs to his aunt. (Correct)
3. What was the name of the man car was stolen during the concert? (Correct)(Incorrect)
What was the name of the man whose car was stolen during the concert? (Correct)
4. The people and things meant so much to him were no longer there. (Correct)(Incorrect)
The people and things that meant so much to him were no longer there. (Correct)
5. I don't know of these bags is hers. (Correct)(Incorrect)
I don't know which of these bags is hers. (Correct)
6. Did you hear I said? (Correct)(Incorrect)
Did you hear what I said? (Correct)
7. It was the first time in his life he had ever seen such a thing. (Correct)(Incorrect)
It was the first time in his life that he had ever seen such a thing. (Correct)
8. The woman with he is talking is my son's teacher. (Correct)(Incorrect)
The woman with whom he is talking is my son's teacher. (Correct)
9. This is we are going to do. (Correct)(Incorrect)
This is what we are going to do. (Correct)
10. They couldn't come to my birthday party, was a pity. (Correct)(Incorrect)
They couldn't come to my birthday party, which was a pity. (Correct)