At three o'clock this morning ,I seemed --someone screaming

问题描述：

At three o'clock this morning ,I seemed __someone screaming in the street
A hearing
B having heard
C to have heard
D to hear
1个回答 分类：英语 2014-11-24

问题解答：

我来补答
C
首先可以排除AB,因为没有seem doing 这个结构.
seem to have done 看起来...(已经做了某事).强调做这件事是在seem之前
seem to do 看起来……(还没做某事).
所以选C
 
 
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