it must be _____(interest)

it must be _____(interest) .It’s not here .It must be _____ ( anywhere ) there It must be _____(fun) to climb mountain It is dangerous .You _____(must be)careful it must be fun to go abroad,(改为感叹句） _____ _____ it must be to go abroad! It Must Be?歌词 it must be The food must be bad becfause it _____ (produce ) a bad smell now. _____,I must do another experiment.A.Be it eve_____,I must do another experiment.A.Be it ever so lateB.It is ever so lateC.It be ever so lateD.So late it be ever选A,为什么? It must be Jim's,_____?A.mustn't it B.needn't it C.isn't it D.be not it It Must Be Love 歌词 It must be some catch. It must be him 歌词 it must be rainy( )( )(随后) it must be imagination 歌词 It must be very happy. 6.---Was that new school master who walked by --- _____.A.It must be that B.It must have beenC.He must be D.This must have been请问这个题为什么选B ----Was that Mr Zhang who walked by?----_____.must have been.为什么be动词后面不接东西呢?为什么It must be that.不行?