—Why not open the windows to let _____cool air in?
—I’d rather you didn’t. ________air in out town is terribly polluted.
| A．a; The | B．/; The | C．/ ;/ | D．the; / |
The bridge was built in memory of the adventurer who was believed ______ the valley.
| A．to have been discovered | B．to discover |
| C．to have discovered | D．having been discovered |
______, you were always there to help, and I will always treasure that.
| A．Hopefully | B．Regretfully | C．Unfortunately | D．Thankfully |
If a book is ______, we should try to read it attentively.
| A．worthy reading | B．worth reading |
| C．worthy to be read | D．worth being read |
If I were in ______ position of the headmaster, I would make every effort to bring ______ end to cheating in exams.
| A．/; the | B．a; the | C．a ; an | D．the; an |
----Have you worked in this company for a long time?
---- Yes, since I _________ from the college.
| A．has graduated | B．graduates |
| C．had graduated | D．graduated |