I have made a close study of the problem这句话肿么翻译啊

I have made a close study of the problem这句话肿么翻译啊 It's time we made careful study of the rejection problem.翻译句 I have sent you an email for the problem of the payment这句话怎么 I have made a lot of friends.这句话对吗?可不可以去掉have? 下面这句话对不对I have already made a lot of friends I have a problem on study 英语对话 翻译这句话Every part of the editor has been made with one thing i have a problem翻译 I have a problem! I have a problem the problem of 翻译 the harder I study ,the better score I will have 这句话有语法错误吗