Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
Many lists of “Wonders of the World” _______ during the Middle Ages
A. are said to exist
B. are said to have existed
C. said to be existed
D. said to exist
Đáp án : B
Cấu trúc câu bị động: S + is/are+ said/thought/believed + to have + past participle = ai được cho là đã làm điều gì từ trước đó, trong quá khứ