( )1.The little girl ____ go back home ____ she finished cleaning the classroom.
A. doesn’t; until B. doesn’t; and C. didn’t; until D. didn’t; while
( )2. I suppose that there will be _____ people and ____ pollution in the future.
A. fewer, fewer B. less, less C. fewer, less D. less, fewer
( )3. John is much shorter than his sister, but he jumps ______she does.
A.as good as B. as high as C. as best as D. as higher as
