I have a lot of questions about english,can you help me?A:when did you came in?B:five minutes beforeA:when did you came here?B:at last week I want do best friend with youI want going to finish my work 初学英语,这是我自己想的对话和句子 ,想让大家帮我看看语法有问题吗,有问题请举出来

I have a lot of questions about english,can you help me?
A:when did you came in?
B:five minutes before
A:when did you came here?
B:at last week
I want do best friend with you
I want going to finish my work
初学英语,这是我自己想的对话和句子 ,想让大家帮我看看语法有问题吗,有问题请举出来