I can’t say which wine is best—it’s a(n) _______ of personal taste.
You can be ______ success, but you don’t need to be ______ Bill Gates to be successful.
—Can I pay by credit card? —Yes, _________.
There was only one ____ of transportation in this mountainous area five years ago.
He ____ the explosion, but no one else did. How lucky he was!
____ they did not believe him, what would they do then?