问题补充:
-I called you at 2:00pm yesterday, but there was no answer.
-Oh, sorry! I in the garden at that time.
A. am working
B. worked
C. was working
D. will work
答案:
A. am working
B. worked
(答案→)C. was working
D. will work
解析:此题重点考查过去进行时的基本用法,表示在过去某个时刻正在进行的动作或存在的某种状态。根据语境可知此句的含义在昨天的那个时候我在花园里工作。故用过去进行时。过去进行时的基本构成是was或were+ving,故选C。