—All the workers went home yesterday________Mr.White.Why?—Because he was on duty.
_______ I work with my classmates after school.
There are many supermarkets in this town, but we think this is _______ of all.
We are very _______ that many students use the Internet every day.
--Did you buy anything on your vacation? --Yes, I bought _______ for my parents.
--_______ does your father watch TV? --He is always busy, so he _______watches TV.