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 39. We should finish the important job，________.
A. long it takes however B. it takes however long
C. long however it takes D. however long it takes
40. ________ comes to the party will receive a gift.
A. No matter who B. Who C. Which one D. Whoever
41. She is willing to help you， ________ busy she is.
A. what B. how C. however D. whatever
42. No matter ________ hard it may be，I’ll carry it out.
A. what B. whatever C. how D. however
43. Why do you want to find a new job ________ you’ve got such a good one already？
A. that B. where C. which D. when
44.________he is， he will be thinking of you.
A. Wherever B. Where C. Now that D. As soon as
45. You should make it a rule to leave things ________ you can find them again.
A. when B. where C. then D. there
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