there must have six boards in each nest 对的还是错的

there must have six boards in each nest 对的还是错的 i——get up at six o'clock.用have t0或者must填空 she must have arrived there yesterday .这是什么时态 there must have句型?有这个句型吗?最好再有个例句,那there have there must have been a million dollars there.为什么有两个there? i have a big family,there are six people in it合并为一句话 he has been there for five six mouthshas been in 是个短语吗第一人称是不是I have been there for five six mouths? .情态动词的选择题---- There is a lot of smoke coming out of the teaching-building there.-- Really?It _____ be a fire,most probably.A.can B.ought to C.have to D.must再比如这个The doctor said it will take six weeks and I ____ be fine by th she had been shopping with har mom at the supermarket.she must have been six years old,and still Let me have a look.Oh,it‘s six fifteen._____ to go to school.We must go.怎么填 must have there must have been a storm there.__.a there couldn't be b.I think there was 改错：I have just receive a letter from my brother.He have been there for six months. 21.She must have arrived there last night ,_______ (do/have/need/must)she 这句话的疑问句怎么填 if i had six oranges in one hand and seven applesin the other,what must i ha急If I had six oranges in one hand and seven apples in the other,what must I have?翻译并回答～ Six and there is n_____ 几个英语小问题.1,There are （ ）classes today. A.six B.many C.no D.some2,Su Yang的父母见到Jim很高兴.（中文翻译成英文）3,You must ( )the blackboard. A.look B.have a look C.look at D.see快~~~~很急,谢谢 show that there must be at least 90 ways to chosse six integers from 1 to 15 so that all the choices have the same sum 证明从1到15中至少有90种的（任取6个数的和）相等的取法提示用鸽巢原理不用具体的取法,只要证明