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Find the word which should not be in the sentence

1. Only when did he returned around was he able to see properly.
2. It was only last week who that they got married.
3. Please, do you help yourself to another piece.
4. I can’t drive and neither does can my mother.
5. So long was the journey that I did fell asleep.
6. Not once did she to regret having come.
7. Why is it that she does always looks unhappy?
8. What he needs it is a long holiday.
9. It was Claire who she left work early yesterday.
10. Whoever disagrees should they raise their hand.