Find the word which should not be in the sentence

1. If you shall pay attention, maybe you’ll learn something.
2. If Tom is busy, will ask Sarah to help.
3. If only she had been caught that train.
4. It’s time we had announced the winner.
5. He’d better to pay off his debts before he buys a car.
6. I’d rather to write a project than sit an exam.
7. If only that I hadn’t lost my traveller’s cheques.
8. Suppose he had caught you stealing, what would you do?
9. Had if he known it was her birthday, he would have bought her a present.
10. Take my business card in case you will want to contact me.