Question

选择题 -have you watered the plants yet? -Yes,I___that this morning.

A. will B.did C. have dong D. was doing

Answer 1

选择B 因为含有明确表示过去时态的词语 （该句中为this morning）时 必须用过去时

Answer 2

B did 有明确的一般过去式时间状语，句子一般用一般过去时。

Answer 3

B.did

Answer 4

B

Answer 5

B