Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
My teeth were a little yellow so I x by the dentist
A. had cleaned them
B. I have them cleaned
C. had them cleaned
D. was cleaned
Đáp án là C Cấu trúc bị động “ nhờ ai đó làm gì “ : have something done by someone