2. 职称英语
  3. He did not attend the meeting yesterday. He______ill.A、must beB、must have been

He did not attend the meeting yesterday. He______ill.A、must beB、must have been

游客2025-07-31  11
问题 He did not attend the meeting yesterday. He______ill.
选项 A、must be
B、must have been
C、should be
D、should have been
答案 B
解析 表示对现在情况的猜测、判断时，形式为：must+动词原形；表示对过去事情的猜测时，形式为：must+ have+过去分词。根据题意，应选[B]。
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