Answer:
Without this, eating food and Steven Spielberg's career would be very different.
I can run but not walk. Wherever I go, thought follows close behind.
What does everyone know how to open but not how to close?
Where do you go in through one hole and come out through two holes at the same time?
Jack and Jill when up the hill jack fell down
I am your mother's brother's only brother in law. Who am I?