I can’t remember when exactly the Robinsons left city. I only remember it was Monday.A.

问题补充：

I can’t remember when exactly the Robinsons left city. I only remember it was Monday.

A. the；the

B. a；the

C. a；a

D. the；a

答案：

A. the；the

B. a；the

C. a；a

(答案→)D. the；a

解析：句中的exactly 表明他们所离开的是一个特定的地方；而not...when exactly 证明Monday不应是特定的,是某一个星期一。