Thereare_____studentsinourclass.Thatis19boysand21girls。
( )I want some
()______ is my umbrella? It's over there.
to ，I，put ，the ，ball ，in，the ，box ，want
_________________________________________
()“Doyouwant_____orange?”“No，I'dlike_____bottleoforange.”
The office building _____ the classrooms
