Amy_____,but could see nothing.She was quite frightened.

问题描述:

Amy_____,but could see nothing.She was quite frightened.
A.looked careful B.look carefully C.looked at carefully D.looked carefully
请说明理由,有分!

D 没有宾语,所以不加at 由后文可见是过去时,所以是looked,副词修饰动词,所以用carefully