Do you think there is somebody in the room?No,I _____ carefully,b_英语解答

Do you think there is somebody in the room?
No,I _____ carefully,but didn`t _____ anything.
A.listened hearB.listened listen to
C.heard listen toD.heard hear

人气：219 ℃　时间：2019-12-16 13:37:20

解答

正确答案：A Listened 指听的动作
Hear 指结果,同时助动词后面要用动词原形