—— What happened to the young trees we planted?
—— The trees＿＿＿＿＿＿well, but I didn’t water them.
A. might grow
B. needn’t have grown
C. would grow
D. would have grown
网友回答
A. might grow
B. needn’t have grown
C. would grow
(答案→)D. would have grown
解析：would have done表示对过去已发生的事情的推测，表示“可能……”。