the expense, I a round-the-world tour.
A. Were it not … would take
B. If it were not… take
C. Weren't it for… will take
D. If it hadn't been for… would have taken
网友回答
A. Were it not … would take
B. If it were not… take
C. Weren't it for… will take
(答案→)D. If it hadn't been for… would have taken
解析：表示与过去事实相反的虚拟语气。