Inmyopinion,theyshoulddosomethingtorewardtheirmost_(produce)employees
Peopletodayarehighlyconcernedaboutthequalityoftheairthey___(breath).
一质点在xy平面内运动，运动方程为r=2ti+(3t²+2)j，则该质点的运动轨迹是（）
Nowthatyouknowallthefacts，youcanmakeaninformed___(choose).
Forthoseinvolved,thescandalhasbeenavery________(pain)experience
