问题补充:
—Have you watered the plants yet, Kathy? —Yes. I that this morning.
A. will do
B. did
C. have done
D. was doing
答案:
A. will do
(答案→)B. did
C. have done
D. was doing
解析:句意:--- Kathy,你浇灌植物了吗?--- 是的。我今天早上浇的。由句意可知this morning是过去的时间状语,所以要用一般过去时,A. will do是一般将来时;C. have done是现在完成时;D. was doing过去进行时。故选B。
考点: 考查动词时态的用法。