The old lady ( )great pain when her son was killed .
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一楼二楼的都错了,The old lady suffered great pain when her son was killed,这句话中,suffer 跟的是great pain这个词组啊,并不是句子,句子her son was killed,这个是有when引导的.suffer是遭受,经历的意思,而suffer from是受……痛苦的意思,根据意思,这句话你想用suffer from的话,应该是The old lady suffered from his son's death.