Question

---Hi，Tracy，you look tired．

---I am tired．I ________ the living room all day．（NMET' 98，24）

1. A.
   painted
2. B.
   had painted
3. C.
   have been painting
4. D.
   have painted

Answer 1

C
用現在完成進行時態表示動作從過去某一時刻開始持續到現在，現在說話時動作仍然在進行。