I_____carefully but could ______ nothing.

问题描述:

I_____carefully but could ______ nothing.
A.listened;hear
B.heard;listen
C.listened to;hear
D.hear;listen to
为什么不能选C而是选A.

楼主,是这样的
listen 是表示听的动作,而hear表示听的结果,再根据语态,选A!