2. 外语
  3. In this experiment, they are wakened several times during the night, and asked to report what they______.

In this experiment, they are wakened several times during the night, and asked to report what they______.

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问题 In this experiment, they are wakened several times during the night, and asked to report what they______.
选项 A、had just been dreaming
B、are just dreaming
C、have just been dreaming
D、had just dreamt
答案C
解析 句中已给出频度状语several times，说明要用完成时态，同时句子的时态定位是现在时they are wakened，显然不能用过去完成时，所以选C。
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