Is there a certain cure ___ lung cancer yet?
I felt it a great honour ______ to speak to you.
When you’re learning to drive, _______ a good teacher makes a big difference.
How do you enjoy _____ your weekends, fishing or watching TV?
I would love _______ to the party last night but I had to work extra hours to finish a report.
He came back on ___ and left on _____.