椎间孔由（）

A.椎体和椎弓围成

B.椎弓根和椎弓板围成

C.所有椎孔连接而成

D.由所有横突孔连接而成

E.相邻椎骨的上、下切迹围成

—I like this set of sofa so much, but I don't know ________ it in my small house.

—You're supposed to put it in the living room. [ ]

A. where to put

B. why to put

C. how to put