问题补充:
Wethe opportunity to go to France, had it not been for Mary’s help.
A. would have lost
B. should lose
C. might lose
D. must have lost
答案:
(答案→)A. would have lost
B. should lose
C. might lose
D. must have lost
解析:考查虚拟语气。根据语境可知为过去时态的虚拟语气,故主句用would/could/should/might have done,选A。