this morning i heard her ——（cry)in the next room.

this morning i heard her ——（cry)in the next room.
this morning i heard her ——（cry)in the next room.

this morning i heard her ——（cry)in the next room.
填crying. 今天早晨我听到她在隔壁房间哭泣.
hear/see sb. do sth 听到/看到某人做某事,表示做完了.
hear/see sb. doing sth 听到/看到某人做某事,表示其正在做.

crying