题目

About_______ of the books in our school library________ written in English. A. one-fifth, are       B. one-fifths, is       C. one-fifth, is         D, . first-fifth, are 答案：A烧水沏茶时，洗水壶要用1分钟，烧开水要用10分钟，洗茶壶要用2分钟，洗茶杯用2分钟，拿茶叶要用1分钟，最少1111 分钟，喝上茶．