-- Do you think we should accept the offer?

-- Yes,we should, we ________ such bad luck up till now, and time _______ out.

A．have had; has been run

B．had; is using up

C．have; is running

D．have had; is running

观察不同时刻拍摄的甲、乙两组照片（如图所示），其中能判断是飞机还是汽车在运动的是_____组。