we must start early,____we have a long way to go.Abecause Bfor

We must start early,（ ） it will take two hours to drive to the airport. we must start early,____we have a long way to go.Abecause Bfor we must start tomorrow morning. We must start early,_____ we have a long way to go.A.because B.since C.for D.while 应 It is a long journey,about three hours,so we have to start early.我想知道we的后面是have to 还是must Must we 【start】 the work at once __(不管怎样),we must start now. 句型转换：We'll start early tomorrow morning=We'll ___ ___ early tomorrow morning we must get there before 7 o'clock.that's ___ we have to start so early A.the reason for why B.whyA.the reason for why B.why C the reason that we must start early,____ we have a long way to go选填for by as of选填for by as of,学过英语的回答 we must ___the train station early in the morning we must 空the train station early in the morning why we must sleep very early can make us better? --we must start for the work now. ---so must we 为什么这里的回答用so must we 而不用so we must why do not you / we call him?同义句 （ ） （ ）call him?let is start early tomorrow .同义句（ ）（ ）start early tomorrow?（ ） we ( ) early tomorrow?what / how ( ) ( ) early tomorrow? we must get up early ,or we will miss the first bus.（同义句转换） we must get up early,（)we (）catch the first bus. 改错 说明理由 Catching the early bus we need to start before 6 o'clock the first we must get up early,or we will miss the train 改错