高中英语选择题,仔细分析一下选项When I talked with my grandma on the phone, she sounded weak , but by the time we ____ up, her voice had been full of life.A .were hanging B.had hung C. hung D.would hang

Question

高中英语选择题,仔细分析一下选项
When I talked with my grandma on the phone, she sounded weak , but by the time we ____ up, her voice had been full of life.
A .were hanging B.had hung C. hung D.would hang

Answer 1

应该选B.这句话的意思是：当我和我的奶奶打电话,她听起来软弱无力,但到时候我们已把电话挂上,她的声音一直是充满活力.
by the time 意思是"到··为止",后面跟完成时态,这是固定用法