互动封闭仿真课堂
1、智能交互 2、电子板书式视频教学 3、在线互动问答 4、封闭课堂启发式教学方式
随堂测试、知识梳理、易错点揭示、总结启迪智能错题本
听课中的错题能自动加入错题本，课后可方便复习及导出错题本升级服务
在线答疑、课后同类题练习、讲义下载、短信提醒55. By the time you ________ back，the supper ________ ready.
A. will get;will be B. get;was C. get;will be D. will get;is
56. ________ I live，I will never give in to the enemy.
A. As far as B. As long as C. As well as D. As soon as
57. I really wonder ________ he has posted me many packages ________ we worked together.
A. how;after B. why;when C. when;before D. why;since
58. Please pronounce the word ________ I did.
A. by the way B. the way C. the moment D. like
59. I was about to leave my house ________ the phone rang.
A. while B. when C. as D. after
60. I had cut the meat into pieces ________ Mother started cooking.
A. when B. as soon as C. after D. while
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