I think you must be mistaken about seeing him at the theatre； I’m sure he ____abroad all week.
| A．is | B．was | C．has been | D．had been |
Ladies and gentlemen, due to an unexpected accident, one of the singers who all of you to hear____tonight,
| A．had come; don't perform |
| B．come; won't perform |
| C．have come; won't be performing |
| D．came; wouldn't perform |
The course normally attracts 20 students per year, ____up to half will be from overseas.
| A．in which | B．of whom |
| C．of which | D．for whom |
As a grassroots singer, she reads everything she can get hold of and catch every opportunity she meets up with so as to gain____progress.
| A．mild | B．widespread |
| C．steady | D． average |
This nationwide smog should serve as a reminder to all, indicating a high time that we____ on what we've done to the environment.
| A．have reflected | B．are reflecting |
| C．will reflect | D．reflected |
more effectively with others, more and more people equip themselves with a higher education.
| A．Compete | B．To compete |
| C．Being competed | D．Competing |