( )What did you_____ on the earth? A. buy B. buying C. bought
( ) I prefer________ at home to ______outside.
( ) Don’t forget the day ______you were received into the Youth League.
( ) All the apples _____ fell down were eaten by the pigs.
( )The red rose is the only one _____I real like.
( )The teacher told me that the students I wanted to see were seen___ football on the playground just now.