---    you disturb her with these annoying questions just when she was busy cooking dinner?

---Sorry, I      that at that time.

A．Should, should have done

B．Shall; may have done

C．Must, should do

D．Must, should not have done

汽车大修时，钢板弹簧应拆散检查各片钢板弹簧的弹性和拱度，不符合规定时，应进行热处理予以修复。