I'm sorry to have you waiting so long for Marcia, and I'm afraid it'll be ten minutes ________ she comes back. A . before B . after C . until 【 解析 】 本题考查连词用法辨析。 until 用于肯定句中,意为 “ 到 ......( 时候 ) 为止 ” ,谓语动词一般是延续性的,表示动作一直延续到 until 所表示的时间为止。题中 “ . I'm sorry to have you waiting so long for Marcia, and I'm afraid it'll be ten minutes ________ she comes back.