英语翻译1请你告诉我这把锁是用什么制成的好吗?2你能告诉我他从美国回来多久了?3我还没有决定是否去参加迈克的生日聚会

英语翻译如下：1、Could you tell me what the lock is made of please?2、Can you tell me how long he does come back from America?3、I have not decided wether to attend Mike's birthday party。