—_______ John this week?

—Yes.

—Where _______ him?

—In the library.

A．Did you see; did you see

B．Have you seen; did you see

C．Do you see; have you seen

D．Have you seen; have you seen

竣工图应是新蓝图，竣工图应采用国家标准图幅，做到规格统一（）