问题补充:
Mary, stop to have a rest. You the flowers in your garden for nearly two hours.
A. are watering
B. were watering
C. water
D. have been watering
答案:
A. are watering
B. were watering
C. water
(答案→)D. have been watering
解析:考查时态:句意:玛丽,停下来休息一下,你在花园浇花有两个小时了,说明浇花这个动作是从过去一直持续到现在,用现在完成进行时,选D。