摘要： The young girl sitting next to me on the plane was very nervous. She before. A. hasn't flown B. didn't fly C. hadn't flown D. wasn't flying 88 I won't tell the student the answer to the math problem until he on it for more than an hour. A. has been working B. will have worked C. will have been working D. had worked

网址：http://m.1010jiajiao.com/timu_id_4108623[举报]