Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
Trả lời câu hỏi dưới đây:
I am driving instructor so I have to be very as people get upset when you criticize them.
A. đầy quyền lực
B. kĩ năng
C. khôn khéo
D. hữu ích