—Tokyo will host 2020 Sumner Olympics．
—Really? It will be first Asian city to host the Olympics twice．
| A．a；a | B．the；the |
| C．the；a | D．a；the |
We should keep the classroomand tidy.
| A．clean | B．cleaned | C．cleaning | D．to clean |
I won’t make such a silly mistake again. I’ll benext time.
| A．careful | B．carefully |
| C．more careful | D．more carefully |
Sir, would you mind nothere, please?
| A．to smoke | B．smoke | C．smoking | D．Smoked |
Miss Green isn’t in the office. Sheto the library.
| A．went | B．was | C．has gone | D．has been |
I didn’t hear your call because Ito music at that time.
| A．listen | B．will listen |
| C．am listening | D．was listening |