Jumbo must weigh a few tons.Jumbo_a few tons.A.probably weighs B.has to weigh C.ought to weigh D.should weigh

Jumbo must weigh a few tons.Jumbo_a few tons.A.probably weighs B.has to weigh C.ought to weigh D.should weigh weigh a few tons 怎么理解jumbo must weigh a few touns,为什么是a few ,a few不是一点,一些的意思吗用several不行吗 请教一个英语句子的语法结构just as any aircraft, from an ultralight to a jumbo jet, must abide by the laws of aerodynamics, so must a lasting society achieve ecological harmony我主要是 so must a lasting society achieve ecological ha You must have your luggage ____ first before you board the airplane.A.weigh B.weighted C.weighing D.weighed我就是不知道B和D的区别,帮我说说吧高手们 must表推测的用法我以前记得must be一定和can't be一定不是和may be或许（表推测） 我还见过完成时态的表推测it must weigh a few tons（它一定有好几吨重）这句话中为什么没有be直接翻译就是 它必 how much did he weigh birthhe weigh 10 jin.A.by B.at C.on D.when 要理由weigh--------birth He --- 60 kilograms.A.weigh B.weight C.weights Dweighs 3.5Each stone weigh as much as two and a half tons.weigh错了应该改为 为什么 Don't want to weigh down again.I must work hard.The dignity of my parents is on my shoulder. weigh是什么意思? keep weigh lose weigh weigh heavily weigh 词性 求救啊,张达人!向您请教一道非谓语动词题The traffic rule says young children under the age of four and ____ less than 40 pounds must be in a child safety seat.（2010浙江）A.being weighed B.to weigh C.weighed D.weighingweigh表示 20.The traffic rule says young children under the age of four and ____less than 40 pounds must be **a child safety seatA.being weighed B.to weigh C.weighed D.weighing我选了a,我觉得小孩子是被称,可是错了, 英语翻译A policeman approached Jimmy and told him he ought to have gone along a side street as Jumbo holding up traffic.(Jumbo is a baby elephant) 3,have gone 为什么用过去现在完成时?ought to go along 应该的内容为什么不用一 What a big fish!Tell me how many pounds ()A it weighs B does it weighC weigh it D to weigh it