Let me tell you some basic information about my little brother first. He is a Primary 2 student who has fair results in studying, while he is good at sports, especially running. Although he is good at sports, he lacks confidence in speaking, no matter whether he is talking to people in daily life or having an exam.
For me, I think oral skills are very important, especially when people are socializing with one another. Without them, you will not be able to enlarge your social circle. Moreover, you cannot get high marks in an oral exam, which may lead to frustration afterwards.
Therefore, I need to help him to improve his oral skills. Firstly, I can talk to him about his daily life more frequently. It is because besides school, students spend most of the time with their family, so it is the best starting point for me to improve his oral skills. Also, I can ask him bout his daily life since I can understand his feelings and the events that happen at his school. At the same time, I can help him to improve his confidence in his communication skills. I think that will be a decent way to improve his confidence in oral since I can kill two birds with one stone.
Secondly, I can help him to practise for the oral tests or exams beforehand. Since he lacks confidence, I will spend more time focusing on the fluency and gesture in oral. Everybody can make up for the lack of natural talents through hard work. That is the main reason why I want him to practise more. I believe he will imrpove his confirdence and result in the oral exam through this method, too!
In conclusion, I believe he can improve his confidence in speaking one day. There are always more solutions than problems, but I have only listed two of them above. Never let your fears rear. I sincerely wish him good luck!