What do these ten sentences have in common?

1. That memo never reached my desk.
2. She was the last woman to be interviewed.
3. Faith re-entered the discussion.
4. America is the home of our fathers.
5. Please drop this off; I've got to run another errand.
6. If they're originals, I xerox them.
7. Falling asleep is a New Year's Eve no-no.
8. We rode in a sleigh to the pond.
9. Imagine! A man on the moon! I never thought I'd see it!
10. I always vote no on propositions.

HINT:
Hidden in each sentence is a word appropriate only to that sentence.

Answer:

Each clue has its corresponding number written out, but hidden, in its sentence.