他突然开始不受控制地抽泣起来。
He suddenly started to ___sob uncontrollably.
听到悲伤的消息后,她开始抽泣。
She began to ___sob when she heard the sad news.
我能听到她在隔壁房间轻声抽泣。
I could hear her ___sob quietly in the next room.