It can be confirmed that the teacher’s English ability has reached the C1 level, but it cannot be judged that he has the teaching ability of EMI courses.
It can be confirmed that the teacher's English ability has reached C1 level, but it can not be judged that he has the teaching ability of EMI course.<br>
It can be confirmed that a teacher's English ability has reached the C1 level, but it cannot be judged that he or she has the teaching ability of an EMI course.