GRE

简答题
When they purchased the hilltop property,they were blissfully ____________of the fact that it stood directlyin the flight path of the local airport.

参考答案:暂无进入在线模考
A.D 
If they were blissfulthey were not surprised(choice F)or suspicious (choice C)The two synonyms are ignorant(choice A)and unconscious (choice D)