Simon is weak. He should eat a balanced stay healthy.请问这里为什么要用stay healthy呢?为什么不可以用keep health?怎样区别什么时候用healthy,什么时候用health?O(∩_∩)O谢谢

What ( ) Simon ( ) (play)?He is playing volleyball. Simon isn't thin.He is s____. Simon is weak. He should eat a balanced stay healthy.请问这里为什么要用stay healthy呢?为什么不可以用keep health?怎样区别什么时候用healthy,什么时候用health?O(∩_∩)O谢谢 英语翻译Simon is quite weak,it's ______ for him______ _______ ______.到底是feel tired 还是get tired ：He is _____ life the box .A.too weak to B.too weak for C.too weak enough to D.not weak enough to He is ___ weak to do such a hard job. Paul is quiet ____(thin) and he looks weak. 翻译10.he has been ill and is growing weak he has a friend is called Simon.(改错) he is very thin:she is very weak.=he is ( ) ( );she is ( ) ( ) he is so weak that he can't walk any further=he is ( )( )( )( )any further He's name is simon和His name is simon那个对,还是都对?说明白了给分 Alhough he is tall,but he is very weak in health 改错 He is so weak that he can't carry the heavy box（改为简单句）He is ___ weak ____ ___ the heavy box. 问两个个英语选择题3.Do you think Simon is__to carry the heavy box?No,I don't think so.__,he is only eight yous old(前面那空会,后面的空不会,A.strong enough;after allB.enough strong ;in allD.enough weak;at all4.Do you like the piece He is weak.I think he should give up _______(smoke). 如何用TOO TO“改写句子?如（he is weak ,he cant throw the ball. 'He is so weak that he can't walk any further' 改为同义句.