However, they often took their divinity for granted and 21 abused it.
答案：(B) even
語意「他們認為自己的神性理所當然，甚至濫用它」，even（甚至）加強語氣；yet（然而）、never（從不，語意矛盾，後面明明說abused）、rather（相當）都不合。
前一句開頭是 However，你可能覺得這一句也要延續轉折的味道，於是挑了 yet。也有人看到 took their divinity for granted 是負面描述，直覺往 never 靠。
看清楚空格所在的結構：they often took their divinity for granted and ______ abused it. and 已經把兩個動作串起來，前一個是「把神性視為理所當然」，後一個是「濫用它」。這兩件事方向相同，而且後面比前面更嚴重，所以空格要的是把程度往上加的字，不是轉折。even 放在它要強調的成分前面，表示這一項比前面提到的更出乎意料、更極端（劍橋 English Grammar Today 把 even 列為 focusing adverb，用來標示最令人意外的那一項）。整句唸一次就順了：他們不但把神性視為理所當然，甚至還濫用它。
yet：當轉折用時語意是「然而」，前後必須相反；但「視為理所當然」與「濫用」並不相反，而是同一個方向的加重。never：與後文直接矛盾，下一句 Seeing this, Brahma... decided to take their divinity away 說明濫用確實發生了，梵天才會出手。rather：主要用來修飾形容詞或副詞表示程度（rather cold 相當冷），放在一般動詞前面表示「甚至」並不成立；它若要表達「而是」，前面得有 but 形成對比。
take something for granted（把某事視為理所當然）、even worse（更糟的是）、not even（連…都不）、rather cold（相當冷）、abuse one's power（濫用權力）、and yet（然而、話雖如此）。
There was once a time when all human beings were gods. However, they often took their divinity for granted and 21 abused it. Seeing this, Brahma, the chief god, decided to take their divinity away from them and hide it 22 it could never be found.
Brahma called a council of the gods to help him decide on a place to hide the divinity. The gods suggested that they hide it 23 in the earth or take it to the top of the highest mountain. But Brahma thought 24 would do because he believed humans would dig into the earth and climb every mountain, and eventually find it. So, the gods gave up.
Brahma thought for a long time and finally decided to hide their divinity in the center of their own being, for humans would never think to 25 it there. Since that time humans have been going up and down the earth, digging, climbing, and exploring—searching for something already within themselves.