Air, food and water are______ to human beings.
Standing on the tip of the cape,____________________ .
__________ John Kennedy was elected president, he was the youngest American President ever.
The boat was sailing north when a terrible storm_____________ .
_______ has been a topic of continual geological research.
______ his brother, Mike is active and friendly.
Tom: "___________________ " Mike: "I won't say no!"
We all agree that she is____________________ student in our class.
Long ago, women were_________to vote in political elections.
We must push the piano to the corner of the hall to_____________________ our party tonight.
The examination was not very difficult, but it was_____________________ long.