TheUnitedStatesisacountry_(advance)inscienceandtechnology
Thisscientistwasawardedwithseveraltitlesforhis________(accomplish)inbiology
Shehasnohostilitytous,_____canbejudgedfromhereyes
Peopletodayarehighlyconcernedaboutthequalityoftheairthey___(breath).
自由竞争资本主义时期，资本主义国家对外经济关系的主要内容是（）
