It has always been the _____ of our firm to encourage workers to take part in social activities.
______ in thought, he almost ran into the car in front of him.
Not only ____ the jewelry she ____ been sold for her son's gambling debts but also her house.
The man whose songs we are fond of ____ in our city next week.
The person we talked about ____ our school last week.
The days we have been looking forward to ____ soon.