he is join the army.A.too young to B.enough young to C.very young to D.young enough to这道题一看凭语感就能选A.但为什么不选C和D

It is ten years since he ____(join) the army 同义句改写：He is old enough to join the army.用“so...that...”改写,谢谢^^ He is so young that he can't join the army(改为同义句)He is ____ young ____ ____the army my brother is 16 years old,he cantjoin the army ( 同义句）my brother is too ___ to join the army ( 同义句） He wants to join the army when he leaves school.Te be a s____ is his dream. How long before did he join the army?改错. How long before did he join the army?改错 so that和too to一样吗?比如He is old enough to join the army.（保持原意,改写句子）He is ____ old ____ he can join the army.空里可以填too He is old enough to join the army.讲解一下这个句子的各个成分及语法 he said he ___(join) the army after he left the college he is old enough _____the army.A.to join in B.joined C,join D.to join He join the army when he was fifteen(保持原句意思）He join the army__ __ __ __fifteen. He is too eager to join the army ,isn’t he She is too glad to receive a doctor’s degree,isn’t she? 一般来讲是join the army 还是 join army 还是join an army He has ______(join) the army for ten years and is now an officer.A.gone intoB.joined inC.been inD.come into He has ______(join) the army for ten years and is now an officer.A.gone intoB.joined inC.been inD.come into 将复合句改为简单句20.Please tell me what I should do first.Please tell me ______ ______ ______ first.21.He is so young that he can’t join the army.He is ______ ______ ______ join the army.22.She works so hard that she can pass the exam.She He is a ____ .He joined the army last year.