-- Why is it so cold here? -- Well, for one thing, the heating i

-- Why is it so cold here? -- Well, for one thing, the heating isn't on; and for________ ,someone has left the door open.
A、other
B、others
C、the other
D、another
【正确答案】：D
【题目解析】：该题考查固定结构。for one thing, for another用来列举，意为“首先/其一,其次/其二”。