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　考查动词的时态。现在完成进行时态表示从过去开始的动作一直持续到现在，还有可能继续持续下去。根据语境这里是说Tracy从过去开始给客厅刷油漆，到现在为止一直刷了三个小时，有可能还要刷下去，故选D项。