Question

--Hi，Tracy，you look tired．

--I am tired．I ________ the living room all day．

[　　]

A．painted

B．had painted

C．have been painting

D．have painted

Answer 1

答案：C
提示：

現(xiàn)在完成進行時表示動作從過去某一時間開始，一直持續(xù)到現(xiàn)在.