It won’t work: it’s a bad idea and secondly it’ll cost too much.A. above allB. to begin wi

问题补充：

It won’t work:,it’s a bad idea,and secondly it’ll cost too much.

A. above all

B. to begin with

C. first of all

D. at first

答案：

A. above all

(答案→)B. to begin with

C. first of all

D. at first

解析：题干中secondly暗示着所填短语表示“首先”。above all侧重于表达“最重要的是……”;first of all一般不用于“首先……，其次……”的列举;at first表示“起初”，只有to begin with 符合题意。