May I have your attention, ladies and gentlemen? The plane in fifteen minutes. Please power off your cell phones.
| A．was taking off | B．is taking off |
| C．has taken off | D．took off |
____ is to be done is ______ to carry it out smoothly since the decision has been made．
| A．What; how | B．Where; how | C．When; what | D．Where; what |
—Remember how we met for the first time, Dick?
—Of course I do．You ______ to the teachers’ office hurriedly and ______ me．
| A．had walked; weren't noticing | B．were walking; didn't notice |
| C．had been Walking; noticed | D．walked; had noticed |
Most people hold the view that the key to keeping fit is to ______ regularly．
| A．give out | B．turn out | C．work out | D．get out |
At the Qiantang River on September 24thlast year, the tidal bore, a name for a large column of water produced by the tide, _____ as high as 1．9 metres,the start of the autumn flood period of the liver．
| A．reaching marking | B．reached; to mark |
| C．reaching; to mark | D．reached; marking |
—Given its breathtaking natural landscape and a relaxing atmosphere—most stores in Norway are closed at 5 o'clock every day．
—It's _______ that Norway has the highest quality of life．
| A．no wonder | B．no problem | C．no doubt | D．no way |