I looked for my pen for a long time last night but it in my pocket this morning.How stran

问题补充：

I looked for my pen for a long time last night，but it in my pocket this morning.How strange!

A. turned out

B. turned on

C. turned up

D. turned down

答案：

A. turned out

B. turned on

(答案→)C. turned up

D. turned down

解析：此题考查短语辨析。turn up“出现，露面”，和句意相符。