Question

【题目】

When the old man to walk back to his house, the sun itself behind the mountain.

A. started; had already hidden

B. had started; had already hidden

C. had started; was hiding

D. was starting; hid

Answer 1

【答案】A

【解析】句意：当老人开始走回家时，太阳已经下山了。太阳落山的动作发生在开始走回家之前，故从句用一般过去时，主句用过去完成时。