When I talked with my grandma on the phone, she sounded weak, but by the time we ____ up, he voice had been full of life. A.were hanging B.had hung C.hung D.would hang 答案:C 解析: 考查动词时态。此处是陈述一个事实,且为过去发生的动作,故应用一般过去时。19.淘气在班级的座位是第4列第2行,可以表示为(4,2),笑笑坐在他的身后,笑笑的座位可以用(4,3)表示.