Nobody except Tom and Millie ____ that park before. Only they can be our guides.
The 2nd Youth Olympic Games wason TV. So everyone could watch it at home.
They were _________ busy _________ with each other _________ the time.
—Which of the two shirts would you like? —_________. I don’t like their styles.
— Don’t _______ too late, or you will feel tired in class. — I won’t, Dad.
— Thanks a lot for offering a great deal of _______ to me in my research. — It was my great pleasure.