--What can I do for you?-- If you see Mr. Smith give him my regards.A. willB. wouldC. sh

问题补充：

--What can I do for you?

-- If you see Mr. Smith, give him my regards.

A. will

B. would

C. shall

D. should

答案：

A. will

B. would

C. shall

(答案→)D. should

解析：考查虚拟语气：句意：--我能为你做什么？--如果你看见斯密斯先生，代我向他问好，这是if的虚拟语气条件句，和将来相反用should do，选D。