Candles may be lit. A dining room may be lit up. So, in the first example, neither is correct.
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fatimah0786But you said that the past tense of light is lit .Many times I come across such tenses with the word lighted.In the sense of "set on fire," the past tense is "lit."
In talking about a person: if I say, "When I entered her hospital room, her face lightened up (or her face lit up)?