The old man watched the young boys playing _______ basketball with _______great interest .
If there were no examinations, we should have ___ at school.
The weather in China is different from__ __.
We don't care if a hunting dog smells_____,but we really don't want him to smell_____.
—Would you please find a world map which is drawn to a scale of .—Yes,sir.Here you are.
__________ people in the world are sending information by E-mail every day.