He is keen on collecting stamps.用英语解释下列句子

John is keen on sports. He is keen on football and he is ___the school football team.填介词 英语翻译he is keen on communicating but unwilling to studyhe is keen on communicating but is unwlling to study哪句是对的,为什么? He is keen on collecting stamps.用英语解释下列句子 他喜欢生物,不太喜欢物理he is keen on biology but not physical.对么 关于keen的提问He has a keen brainCompetition is very keenDogs have keen hearing. 同义句 She is keen on singing. Linda is keen on plgying the violin She is keen on sports 的疑问句 2.Don’t __ Tom .He is only a boy.A.be hard on B.be keen on C.be kind to D.be on good terms with The boy is keen on collecting stamps解释句子 急 Mary is keen on fashion.用英语改为同义句 What's he keen on doing?其中keen这个单词在这句话中的意思怎么理解? be keen on I am keen on 改写句子阿.明天就要上学了.急...要求：对划线部分作重点解释,写出的句子必须是对原句全句的解释,必须是完整的句子.1.He showed the new watch to me2.Is he keen on sports?（划线的是Is、keen on）3.What Kitty's little brother is keen on collecting stamps.改为反义疑问句Kitty's little brother is keen on collecting stamps,____ _____?要原因 My bother is an engineer和She is keen on sports 的疑问句