—What can I do for you sir ?—I want to buy a flat—large comfortable and at the seaside.

问题补充：

—What can I do for you, sir ?

—I want to buy a flat—large, comfortable and at the seaside.

A. in all

B. after all

C. above all

D. first of all

答案：

A. in all

B. after all

(答案→)C. above all

D. first of all

解析：可联系答.案.网客服索取。