she is expected to--a good doctor when she graduates from th

she is expected to__a good doctor when she graduates from the medical college.为什么选make而不用turn?我知道make有“适合,胜任”的意思,但是turn也有“成为,变成”的意思啊?牛津英汉高阶上turn不是有“to change into a particular state or condition:"的意思么?,