I have to be in bed by ten o’clock.的同意句是什么?

I have to be in bed by ten o’clock.的同意句是什么? I have to be in bed by ten o'clock. have,to,in o'clock,I,bed,by,be,ten(.)连词成句 I have to be in bed (by ten o'clock).对括号内的提问 I have to be in bed by ten o'clock.[用in bed提问] ten,night,at,must,I,be,in,by,bed,o'clock.(连词成句） 外语：连词成句（1)has,by,in bed,she,to,ten,o`clock be 英语首字母填空 I have to b( ) in bed by ten o'clock. I have to ____ (be)in bed by nine o' clock She has to be in bed by ten o'clock I have to be home by ten o'clock.为什么不是be at home? I have to be in bed ___ ten o'clock.选A还是C呢?A.at B.in C.befor