Tom __________ the party as no one saw him there yesterday eveningA:can’t attend B:mustn’t attend C:won’t have attended D:couldn’t have attended

问题描述:

Tom __________ the party as no one saw him there yesterday evening
A:can’t attend
B:mustn’t attend
C:won’t have attended
D:couldn’t have attended

D
虚拟语气+过去完成时

应选D,因为是昨天晚上发生的事情,应用过去式.