I slept at ten o'clock有什么错误一本书上说的,说Slept要改成went to sleep或fell asleep.为什么啊

I slept at ten o'clock有什么错误一本书上说的,说Slept要改成went to sleep或fell asleep.为什么啊 She_____for ten hours at least.It was at nine that she fell asleep last night.A.slept B.has slept I haven't slept at all in I haven't slept at all in 急 I finished my homework at ten o`clock yesterday同意句I -- -- my homework ---ten o`clock yesterday I'm supposed to be at home by ten o'clock at night. I'm supposed him to be at home by ten o'clock at night.什么意思? I slept till 9o'clock this morning什么意思 2.22My brother slept upstairs at eight o'clock last night.slept 错了 应该改为 为什么~ What ________you _______(do) at ten o'clock yesterday?I ____________(study) in class. I have to be home by ten o'clock.为什么不是be at home? ten,night,at,must,I,be,in,by,bed,o'clock.(连词成句） She _____ for ten hours at least.It was at nine that she fell asleep last night.为什么是slept she___for ten hours at least.it was at nine that she fell asleep last hight.为什么填 slept? it's at ten o'clock. at ten o'clock 的意思 What time do you sheep?I sheeWhat time do you sheep?I sheep ______.A.ten o'clockB.at ten o'clockC.in ten o'clock(横线中选ABC中哪个) she___for ten hours at least.it was at nine that she fell asleep last hight.为什么填 slept?有for ten hours 应该用现在完成时啊 I have to be in bed by ten o'clock.这句中 by ten o'clock是什么意思,为什么不是at,have to be in bed 是什么句型.