He join the army when he was fifteen(保持原句意思）He join the army

He join the army when he was fifteen(保持原句意思）He join the army 1.he joined the army when he was fifteen.(保持原句意思) 1道英语题目说明理由1.He joined the army when he was fifteen.(保持原句意思)H My brother ___(join) the army when he ___ (be) 20 and he ___ 44） He joined the army when he was 18.He _____ (be) an army How long before did he join the army?改错. It is ten years since he ____(join) the army How long before did he join the army?改错 He is so young that he can't join the army(改为同义句) Then the great day came _ he was to join the army.A.where B. Johnny w____to join the army ,but he was o_____16years old,s 同义句改写：He is old enough to join the army.