--- ____ you _____ of the pop singer called Justin Bieber?--- Yes, I have. His voice sounds_____.
Andrea Bacilli never_____, which makes him a successful singer.
- - -It took_____ people _____ the work.
I don’t know _____.
----It’s Father’s Day,_____? ----Yes. Let’s buy a gift for Dad.
She has made a _____ to be a doctor after finishing her education.