it must be ___ to fly to the moon ___ a spaceship.a.a great fun,byb.great fun,byc.a great fun,ind.great fun,in

it must be teenagers ___ fun.A.have B.having C.had D.to have The streets are all wet .It ___ during the night.A、must be raining B、must have rain C、must have rained D、had to rain there must be something wrong to it It seems I must to be peakedness It's ___(ice).We must be careful. 一边念书一边工作一定很辛苦吧.翻译→It must be hard to study and work___ ___ ___ ___. it must be ___ to fly to the moon ___ a spaceship.a.a great fun,byb.great fun,byc.a great fun,ind.great fun,in We must get there before it ___(begin)to rain. ___(not be)afraid to read it. Must children ___ how to keep safe in fire accidents? Yes,it's more important than anything.A: be asked B be taught 为什么是B Is it bag ___ ,Tom.（you） No,it isn't___ .(I) It must be ___ .（she）填空 It Must Be?歌词 it must be you must be ___!(kid) We must ___(be) careful. 5.Water ___ be changed into gas,but it ___ be heated to its boiling point.A.must; can B.may; needn't C.can; must D.need; may 6.____ the government to raise interest rates they ___ lose the election.A.Were; would B.If ;will C.Was; could D.Unless; must It ___ be quite late now.We must be going home.A.can B.must C.would D.may ___ of the earth must be ___ to the earth.(friend) 词形变化