We were delayed at the airport．Otherwise，we here by lunch．
A. must have been
B. could be
C. should be
D. would have been
网友回答
A. must have been
B. could be
C. should be
D. would have been
解析：句意：我们都在机场被耽搁了，否则我们就能在午餐前到这里了。We were delayed at the airport．是过去的事情，otherwise相当于一个虚拟条件句：If We hadn’t been delayed at the airport．所以主句用would have done。选D。