The exam lasted three hours

1.The exam lasted three hours.
It takes us
2. Unlike her friends, Jane prefers an independent life.
Jane prefers
3. When they arrived, the good seats were already taken.
They didn't get good seats because 
4. Keeping calm is the secret of passing the driving test.
As long as you
5. The exam was much earier than he had expected.
He had expected that
6. To find a house in this city is difficult.
It's difficult
7. Nobody has invited her to the party.
She