i must be at work at 10 o'clock.My employer will confirm tha

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i must be at work at 10 o'clock.My employer will confirm that I was there on time
如题,他这里的must be是连用的吗?表示猜测还是说be只是单纯做谓语而已

是连用我必须在10点钟上班.我的雇主将会证实,我是准时到达的
再问： must be 但是带有猜测的意思但是如果我要表达我必须10点钟上班那该怎么表达呢？ i must work at 10 o'clock这样吗？
再答： I must go to work at ten o 'clock
再问：谢谢明白了

i must be at work at 10 o'clock.My employer will confirm tha Pick me up at 8o'clock.I will have finished my work by then. I will be home at seven o'clock.【汉译】 o'clock will at home My seven Pick me up at 8o'clock.I will have finish my work by then.这句 I begin work at nine o'clock和I begin to work at nine o'clock 根据答句写问句：I will go to work at nine o'clock.(When) ten,night,at,must,I,be,in,by,bed,o'clock.(连词成句） They must _____(be)at school by eight o'clock My father u___ goes to work at 9 o'clock. My mother usually returns feom work at 6 o'clock. My mother ususally returns from work at 6 o'clock .