At first, I didn’t know what______ Facebook was, and now I do know what it is. I have to say, it sounds like ____huge waste of time.
She did not take the advice that she ___ at rush hour, so she got lost.
There _____ be any difficulty in passing the oral test since you have practiced a lot in the school.
The man had expected to see all his relatives when in hospital, but _______ came to see him while many of his friends offered him their help.
Due to circumstances ____ our control the performance has had to be cancelled.
Only those who have experienced hardship ____ well aware of what happiness means.