— Hi, Michelle, I can't find my e-dictionary. 

— Sorry, I _____ it. I guess I put it on the top shelf with my things.  [ ]

A. had used

B. used

C. was using

D. am using

第3鳃裂瘘管内瘘口位于()

A．腭扁桃体窝

B．舌盲孔

C．梨状窝

D．外耳道软骨部

E．咽后壁