他被一块食物噎住了，开始咳嗽。
He began to ___choke on a piece of food and started coughing.
他喝得太快，差点被水呛到。
He drank too fast and almost ___choked on the water.
她在演讲时因为紧张而说不出话来。
She ___chokes during the presentation due to nervousness.
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