If you don't know the name of the plant， please write" " （know） in your notebook．
Please think t （两次） before you hand in your paper．
A good hobby a （增加） a lot of fun to our spare life．
The little boy is always keeping his bedroom clean and t （整齐）．
Everyone has a r （角色） to play in making our country more beautiful．
My grandparents are b （忙碌） making zongzi for the Dragon Boat Festival．