问题：
【题文】— I called you yesterday but no one answered.
— Well, Maybe I in the garden at that time.
A．worked
B．am working
C．was working
D．would work
【题文】— I called you yesterday but no one answered.
— Well, Maybe I in the garden at that time.
— Well, Maybe I in the garden at that time.
| A．worked | B．am working | C．was working | D．would work |
参考答案：