问题补充:
—I phoned you at 5:00 yesterday afternoon, but nobody answered me.
—Sorry. I the flowers in the garden at that time.
A. was watering
B. am watering
C. water
D. will water
答案:
(答案→)A. was watering
B. am watering
C. water
D. will water
解析:根据答句中的at that time 可知描述的是过去某时正在进行的动作,故用过去进行时。故选A。