What's the mistake?
Each of these sentences has a grammar mistake. Find the mistake, then write the correct sentence.

1) What time did you had lunch today?

2) Did you be interested in sport when you were younger?

3) My last holiday not cost a lot of money.

4) Where did you went to school?

5) The sales project did not be a success.

6) Why you left work early yesterday?

7) I didn't born in England.

8) Did you found your last job challenging?

9) I not moved to my present house until a year ago.

10) Why didn't they made much progress last month?