Peopletodayarehighlyconcernedaboutthequalityoftheairthey___(breath).
Forthoseinvolved,thescandalhasbeenavery________(pain)experience
国家垄断资本主义的产生和发展,是在资本主义生产方式范围内对资本主义生产关系的()
Thisscientistwasawardedwithseveraltitlesforhis________(accomplish)inbiology
Itwas________ofyounottodisturbuswhileweweresleeping