He ________ carefully, but he didn't ________ anything.
A.listened;heardB.listened;hearC.heard;listenD.listen;hear...
A. listened; heard
B. listened; hear
C. heard; listen
D. listen; hear 展开
B. listened; hear
C. heard; listen
D. listen; hear 展开
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询