I get the two of them mixed up ; they are so similar.
| A．at one time | B．at no time | C．in no time | D．all the time |
—How did you like the concert last night ?
—I enjoyed it very much, but the dancers _____ a better job．
| A．could have done | B．must have done |
| C．could do | D．had done |
I appreciate _____ the opportunity to work in your company two years ago．
| A．giving | B．to give |
| C．being given | D．to be given |
_____ economic, political and cultural differences, it is difficult for China and America to fully understand each other．
| A．Apart from | B．Regardless of |
| C．On account of | D．In terms of |
Disadvantages as they have, online games never fail to _____ a large number of teenagers．
| A．appeal to | B．object to |
| C．refer to | D．turn to |
—Could we complete the task according to the schedule?
—I doubt that．The problem remains _____ we can get financial aid from the government．
| A．that | B．when | C．why | D．where |