Tom ______ the meeting last night, but he didn’t as he suddenly fell ill.

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问题 Tom ______ the meeting last night, but he didn’t as he suddenly fell ill.

选项 A、had attended
B、should have attended
C、could have attended
D、must have attended

答案B

解析 在谈到那些本该发生而没有发生的事时, should或ought to应与不定式的完成式形式连用。例如:The plant is dead.Maybe I should have given it more water. 这棵植物死了,也许我该多浇点水。故本题应选D为正确答案,
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