— What did he think of the trip to Beijing last month？— He had such a good time he visite

问题补充：

— What did he think of the trip to Beijing last month？

— He had such a good time he visited the Great Wall.

A. until

B. that

C. where

D. when

答案：

A. until

B. that

C. where

(答案→)D. when

解析：考查连词：A. until直到，B. that那C. where哪里，D. when 当….时候，句意：--你认为上个月在北京的旅行怎么样？--参观长城的时候他玩得非常的高兴。选D。