My pain ______ apparent the moment I walked into the room, for the first man I met asked sympathetically: "Are you feeling all f

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问题 My pain ______ apparent the moment I walked into the room, for the first man I met asked sympathetically: "Are you feeling all fight?"

选项 A、must be
B、must have been
C、had been
D、had to be

答案B

解析 考查情态动词用法。must have done表示对过去某事的肯定推测,常译成“一定是……”,故选项B为正确答案。
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