问题补充：
Quite a few people were injured or killed in this traffic accident last week, ?
A. were they
B. did they
C. weren’t they
D. didn’t they
答案：
A. were they
B. did they
(答案→)C. weren’t they
D. didn’t they
解析：句意：在上一周的交通事故中，相当多的人受伤或死亡对吗？此题考核“反意疑问句”的用法，在“前肯后否”“前否后肯”原则下，根据关键词“quite a few(相当多)修饰可数名词”“were injured中的be动词”，需要使用“前肯后否”和be动词的were形式，即本题选C。
