题目

Eddie was sleeping _______ Millie was reading a magazine.A. until B. while C. before D. after 答案：【答案】B【解析】试题句意：埃迪在睡觉，同时米莉正在读一本杂志。until直到；while当……的时候，同时；before在……之前；after在……之后。所以选B。The book _______ to the library.A.has returnedB.had returnedC.has been returnedD.returns