—When did you meet her last?—I don’t remember exactly but I’m sure it was unforgettable F

问题补充：

—When did you meet her last?

—I don’t remember exactly，but I’m sure it was unforgettable Friday when I went for a walk after wonderful lunch.

A. an；a

B. /；a

C. the；/

D. /；/

答案：

(答案→)A. an；a

B. /；a

C. the；/

D. /；/

解析：

此处Friday和lunch都有定语修饰，表示特定意义，所以用不定冠词。