At_____nine o'clock,he goes bed.(填单词）At_____nine o'clock,he goes to bed.(填单词）

At_____nine o'clock,he goes bed.(填单词）At_____nine o'clock,he goes to bed.(填单词）
At_____nine o'clock,he goes bed.(填单词）
At_____nine o'clock,he goes to bed.(填单词）

At_____nine o'clock,he goes bed.(填单词）At_____nine o'clock,he goes to bed.(填单词）
about
大约九点钟的时候,他去睡觉了

about 大约
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填about 。另外，该题有些错误，后面应该是goes to bed