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 为什么不能选B呢

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 为什么不能选B呢 翻译：freight payable as per charter party demurrage/despatch:as per charter party /no despatch He ______ (dress) as a woman at the party. 翻译英语：As requested by the concerned party. party party Party party Party PARTY party party party party The teacher as well as the students enjoys himself at the party.什么意思? 彭翔翻译:chastity was as deeply ingrained in them as party loyalty. no one except jack and tom____the answer?这里为什么用knows,单数呢?