选择A.原因如下：
1.see sb.doing sth.看见某人正在做某事.故第一个空填sitting;
2.第二个空填listening,因为现在分词做伴随状语,意思是“一些父母坐在教室后面（正在）听老师讲课."
3.而过去分词作伴随状语需要这个动词与前面提到的主语有被动关系,显然“父母”与“听”是主动关系,故不用listened.
That day I saw some parents ______ at the back of the classroom ______to the teacher.
That day I saw some parents ______ at the back of the classroom ______to the teacher.
A sitting;listening
B sat;listening
C sitting;listened
D sat;listening
这道题的说法有两种,一种是listening,一种是listened,到底选什么,为什么?
A sitting;listening
B sat;listening
C sitting;listened
D sat;listening
这道题的说法有两种,一种是listening,一种是listened,到底选什么,为什么?
英语人气：938 ℃时间：2019-08-20 13:26:12
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