Mr. Smith will pay a visit to Beijing this autumn we will enjoy the Olympic Games in 200

问题补充：

Mr. Smith will pay a visit to Beijing this autumn, we will enjoy the Olympic Games in .

A. where

B. when

C. which

D. how

答案：

(答案→)A. where

B. when

C. which

D. how

解析：因为先行词是Beijing而不是this autumn所以用where引导定语从句。