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6、----You could have asked Mr. Johnson for help. He is kind-hearted.
----I ____ that. A whole day ___.
A.forget; wastes B. forgot; was wastedC.forgot; had wastedD. forget; was wasted
7、I had intended to see you in the hospital last week, but I ____ too busy.
A. was B. had been C. would be D. would have been
8、The Internet gives people the chance to have the information they look forward ____ to them quickly and cheaply.
A. to deliver B. deliver C. to delivering D. to delivered
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