Tiánbiǎo shí, hūnyīn zhuàngkuàng yì lán tā tián le sàng'ǒu.
When filling in the form, she put 'widowed' under marital status.
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丧偶 is formal: forms, news and legal texts. In conversation people say 老伴走了 'my other half has passed away'. 丧 here is fourth tone, 'to lose'; first-tone 丧 is for funerals, as in 丧事.