—Has your father finished his report?
—Sorry，I don’t know．He ________ it this morning．

---Has your father finished his report?

---Sorry，I don’t know．He ________ it this morning．

1. A.
   was writing
2. B.
   wrote
3. C.
   has written
4. D.
   had written

—Has your father finished his report?
—Sorry，I don’t know．He ______ it this morning．

1. A.
   was writing
2. B.
   wrote
3. C.
   has written
4. D.
   had written

—Has your father finished his report?

—Sorry，I don’t know．He ________ it this morning．

A．was writing         B．wrote               C．has written        D．had written