Question

—Hi，Tracy，you look tired.

—I________the living room for three hours.

A．paint                                             B．had painted

C．was painting                                    D．have been painting

Answer 1

D　考查動(dòng)詞的時(shí)態(tài)。現(xiàn)在完成進(jìn)行時(shí)態(tài)表示從過去開始的動(dòng)作一直持續(xù)到現(xiàn)在，還有可能繼續(xù)持續(xù)下去。根據(jù)語境這里是說Tracy從過去開始給客廳刷油漆，到現(xiàn)在為止一直刷了三個(gè)小時(shí)，有可能還要刷下去，故選D項(xiàng)。