单选题
In this experiment, they are wakened several times during the night, and asked to report what they _____.
Ahad just been dreaming
Bhad just dreamt
Care just dreaming
Dhave just been dreaming
正确答案
答案解析
句意：在这个试验中，他们一晚上被叫醒好几次，并被要求描述出自己刚刚在做的梦。句子前后时态应一致或相呼应，句子前半部分用的是一般现在时，排除选项A与B。句中“他们”被要求描述自己醒来前正在做的梦，故排除选项C。