【評論主題】Cathy reminded him of what he should ___ have gotten.(A) ought(B) ounce(C) otherwise(D) opposite

【評論內容】gotten沒錯喔~就是因為他已經忘了

【評論主題】The world's polar bear population 15 thought to have recovered since hunting was largely banned

【評論內容】那個15是怎麼回事??