（单选）I can hear someone___the piano in the next room.A.playingB.playC.to playD.are playing
问题描述：
（单选）I can hear someone___the piano in the next room.
A.playing
B.play
C.to play
D.are playing
答
a
答
A playing
答
因为hear作为行为动词时，有hear to do sth,表示''经常听到某人做某事''或''听到某人经常做某事" hear sb doing sth 表示'听见某人正在做某事'故此因选A
答
应选A
答
A,正在进行的,hear属于感官词,后面用进行时