—Many tourists to the Great Wall every year.
—Yes, that’s true.
A. attract
B. have attracted
C. are attracting
D. are attracted
网友回答
A. attract
B. have attracted
C. are attracting
(答案→)D. are attracted
解析：attract是“吸引”的意思。本句的主语是many tourists，故应该是被吸引，所以本句应该用被动语态。本句的意思是“每年许多游客都被吸引到长城上。”所以本题选D。