-What were you doing when I phoned you?---I had just finished my homework and to take

问题补充：

---What were you doing when I phoned you?

---I had just finished my homework and to take a bath.

A. started

B. has started

C. was starting

D. had started

答案：

A. started

B. has started

(答案→)C. was starting

D. had started

解析：句意：---我给你打电话的时候，你在干吗？---我刚刚做完我的家庭作业，正在洗澡。由句义可知，打电话时正在洗澡，所以用过去进行时，而在这之前要用过去完成时，故选C。

考点: 考查动词时态的用法。