2. 外语
  3. An ambulance was waiting in the street, somebody______hurt or killed.

An ambulance was waiting in the street, somebody______hurt or killed.

admin2014-09-24  69
问题 An ambulance was waiting in the street, somebody______hurt or killed.
选项 A、should have been
B、must have been
C、should be
D、should not have been
答案B
解析 本题综合考查情态动词，从句是过去的事实，主句用must have+过去分词，表示对过去发生的事情的肯定推测。题意为，一辆救护车停在街上，准是有人受伤或被杀了。
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