Jack said that he was sure of succeeding in passing the Totel Examination this time, _______, in my opinion, I don’t think so.
| A．what | B．which | C．but | D．therefore |
How long do you think _________ the computer company launches a new model?
| A．it will be before | B．will it be until | C．will it be when | D．it will be that |
Miss Li _ as a secretary for five years in the company, and now she is general manager of it.
| A．serves | B．served | C．had served | D．has served |
Though a typhoon is on the way, people are still looking forward _________ the outdoor 
concert by the pop singer.
| A．to canceling | B．not to canceling | C．not to cancel | D．to not canceling |
－Mary, how did your Math test go?
－I had thought I _________, but in fact I came in the top 10% in my class.
| A．should have failed | B．couldn’t have failed |
C．might have failed | D．shouldn’t have failed |
Rome was not built in a day. You should set ____ goals and work hard to achieve them.
| A．alternative | B．considerable | C．subjective | D．realistic |