Even many years after his divorce, he still couldn’t figure out the reason for his ____ marriage.
| A．to fail | B．to be failing | C．failing | D．failed |
It is acknowledged that _______ shortest distance between persons is _______ sincere smile.
| A．a; the | B．the; / | C．a; / | D．the; a |
Canada is a large country _____ many people from all over the world live.
| A．which | B．in which | C．that | D．in that |
I called the airline to ______ my flight reservation a week before I left for Canada.
| A．expand | B．book | C．confirm | D．strengthen |
It was for the first time that the two countries ______ an agreement.
| A．reached | B．have reached | C．had reached | D．will reach |
I have been convinced that the print media are usually more __________ and more reliable than television.
| A．actual | B．adequate | C．accurate | D．autonomous |