My pain _______ apparent the moment I walked into the room, for the first man I met asked sympathetically， “Are you feeling all right?”

A．must be

B．must have been

C．should have been

D．could have been

提升“三集五大”体系，以（）业务为重点，因地制宜推进大中城市和地（市）县公司业务集约融合。

A.调控、运检、营销

B.规划、建设、营销

C.规划、运检、物资

D.调控、建设、物资