Inversion Error Exercise

Look at the sentences which all use inversion. Which sentences are correct?

1. How wonderful that movie was!
Correct
Not Correct

2. Only after posting the postcard did I remember I hadn't put a stamp on it.
Correct
Not Correct

3. Rarely Veronica forgets to take her key.
Correct
Not Correct

4. Under no circumstances you should reply to that letter.
Correct
Not Correct

5. What a lovely meal was that!
Correct
Not Correct

6. Only when you have your own children you will understand how difficult it is.
Correct
Not Correct

7. Never I have seen so much snow in November!
Correct
Not Correct

8. Only Phil saw the thief coming through the window.
Correct
Not Correct

9. What worries me most is the sheer expense of the vacation.
Correct
Not Correct

10. What I'm going to do, ask for another bill.
Correct
Not Correct