Here are the completed sentences with the verbs changed appropriately:

1. Somebody repaired her car yesterday.
She **had her car repaired**.

2. He couldn’t afford to buy the car.
He was not **able to buy the car**.

3. We haven’t been to a concert for over a year.
The last time **we went to a concert was over a year ago**.

4. My salary is high, but yours is higher.
My salary isn’t **as high as yours**.

5. It’s a two-week holiday.
The holiday **lasts two weeks**.

6. We would like to help you.
We are looking **to help you**.

7. It is said that he is 108 years old.
He **is said to be 108 years old**.

8. They made him wait for two hours.
He **was made to wait for two hours**.

9. John has never been so rude to anybody.
At no **time has John been so rude to anybody**.

10. I now regret spending too much money on clothes.
I wish **I had not spent so much money on clothes**.