问题补充：
Why didn you tell me there was no meeting today? I all the way here through the heavy snow.
A. needn have driven
B. can have driven
C. mustn have driven
D. shouldn have driven
答案：
(答案→)A. needn have driven
B. can have driven
C. mustn have driven
D. shouldn have driven
解析：needn have done意为“本来不需要”；D为“本来不应该”。
