______comfortably in his chair,my father enjoyed music with his eyes half _______.  [ ]

A. Seated;closed  

B. Sat;closing   

C. Seeding;closed    

D. Sitting;close

将一个正方形桌面砍下一个角后，桌子剩下的角的个数是[ ]

A、3个

B、4个

C、5个

D、3个或4个或5个