互动封闭仿真课堂1、智能交互 2、电子板书式视频教学 3、5分钟一次互动问答 4、封闭课堂
9. The new suspension bridge _____by the end of last month.
A. has been designed B. had been designed
C. was designed D. would be designed
10. Nowadays, we students are from heavy school work and for the entrance examination.
A. suffering, preparing B. suffered, prepared
C. suffering, prepares D. suffers, preparing
11. Although we invited him to the party, Mr. Smith decided to another late night the computer room.
A. spend; in B. take; for
C. cost; on D. spend; on
12. The room _____smoke and I had to go out for some fresh air.
A. was filled of B. was full with
C. was filled with D. was full about