It is human nature to think back to a golden age ______ one’s country was strong and respected.
A mistake ______ have been made on our bill. We didn’t order any fish today.
As you wander through the streets, you see thousands of masks but you have no idea_____ the faces behind them look like.
_______ to carry out the plan in time, they will make careful preparations.
I never thought of it before, _______ all that my parents had done for me for granted.
______ number of people, who have access to private cars, is on____ increase in recent years.