Doctor Tuan, not doctor Phuong, takes care of sick...

Câu hỏi: Doctor Tuan, not doctor Phuong, takes care of sick people.

A. Who takes care of sick people?

B. Which takes care of sick people, doctor Tuan or doctor Phuong?

C. What do doctor Tuan and doctor Phuong do?

D. Why do doctor Tuan and doctor Phuong take care of sick people?