问题补充：
The possibility we won’t produce enough goods troubles everyone here.
A. which
B. that
C. who
D. where
答案：
A. which
(答案→)B. that
C. who
D. where
解析：这题考查同位语从句的用法，possibility是同位词，that引导同位语从句，对possibility的内容进行说明，句意是：我们将不会生产足够的货物的可能性让这儿的每个人都很为难。选B。
