Помогите найти оплошности в предложениях.1. She doesnt know you, does

Помогите отыскать ошибки в предложениях.

1. She doesnt know you, does she?

2. She asked for your help, dont she?

3. They wont come, do they?

4. Youve arrived late again, didnt you?

5. There isnt any sugar left, is there?

6. I didnt tell you that, did I?

7. You wouldnt dare, did you?

8. I am doing a great job, am I?

9. She fell on her back, dont she?

10. You couldnt open it, couldnt you?