Some children come to school with more finely trained perceptual skills than others这句话里的finely和trained做何理解?

Come on,children.Help_____(you)to some fruit. Come on,children!Help ________ to some meatA.yourself B.yourselves请说明理由 i won't.come and visit me some Why don't some children go to school?中为什么用some 而不是用any? Some children in Africa can't have enough food to eat and they're very t( ). I was terribly () about the children when they didn't come home from schoola开头的 I'mworried ,the children when they didn't come back home from school.英译汉 Mothers ofte feel a___about their children when they don't come back home on time there is a girl sitting under the tree .She is kitty .she is beautiful and lovely.she can hear some children but she can't see them .she is blind .the children are playing with the balls beside her.they are happy .Alice says ”come and play with us 用括号内所给词的正确形式填空：Come here,children!Help _____(yourself) to some fish ,please, Some children like f______ soup,but some don’t like it.怎么填Some children like f______ soup,but some don't like it.C______ are bad for your health if you eat too many.怎么填 Some children can't eat__________(health).They like junk food very much some children just dont know how to have fun改为肯定句 The children don't do some exercise every day错在什么地方 Some children don't go to school,because their families are too poor.的同义句 Some children can't eat healthy比起eat healthily 哪个正确? 请翻译：Some children aren't able to speak before they are two. When did the children come?