---     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

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

---Sorry, I      that at that time.

1. A.
   Should, should have done
2. B.
   Shall; may have done
3. C.
   Must, should do
4. D.
   Must, should not have done

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

— Sorry, I ______ that at that time.

　 A. Should; must not have done　　　　 B. Shall; may have done

　 C. Must; should do　　　　　　　　　 D. Must; should not have done

Why ________ you disturb me while I am absorbed in my lessons?

A．must       B．can

C．may        B．should