Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

They say that the doctor has made a serious mistake.

A. The doctor is said that he has made a serious mistake.

B. It is said that the doctor has been made a serious mistake

C. The doctor is said to have made a serious mistake

D. The doctor is said to make a serious mistake

tui cũng vậy nè

a, B + C = 180⁰ => nội tiếp

b, tam giác MEC đồng dạng với tam giác MCB vì góc M chung, góc ECM = góc MBC

...

suy ra tỉ lệ MC/ME=MB/MC suy ra MC² = MB.ME