答案：happened; mine; ago; was reading; climbed; went; had entered; heard; dropped; torch; ran; quickly; heard; came; anybody; thieves; gone; parrot; called; go back
解析：根据上下文语境及语法知识填空。“故事发生在我的一个朋友身上”用“happened to a friend of mine”；“一年前”是“a year ago”；“正在床上看书”用“was reading”；“爬进厨房”用“climbed into”；“进入房子后进入餐厅”，“进入房子”用过去完成时“had entered”；“听到声音”用“heard”；“扔下手电筒跑了”用“dropped the torch and ran away”；“尽可能快地”用“as quickly as”；“听到噪音下楼”用“heard the noise and came downstairs”；“看不到任何人”用“see anybody”；“小偷已经走了”用“the thieves had already gone”；“鹦鹉叫了”用“parrot called out”；“回去睡觉”用“go back to sleep”。

答案：We had had dinner before they arrived.
解析：“吃过晚饭”发生在“到达”之前，用过去完成时had had dinner；“在他们到达之前”before they arrived。