—Jim, have you done  homework_________?

---- Yes, I have _____ done it.

Jim, have you ever been to Xi'an ________? No, never.

[　　]

—Jim, have you finished reading Harry Potter?

—No. I          my father in the garden all day yesterday.

       A．was helping      B．would help     C．had helped    D．have been helping

---Jim, have you done  homework______?
--- Yes, I have _____ done it.

1. A.
   already; yet
2. B.
   yet; yet
3. C.
   already; already
4. D.
   yet; already