Americans spend more money than they have by using credit cards so they are always .A. in

问题补充：

Americans spend more money than they have by using credit cards, so they are always .

A. in peace

B. in danger

C. in relief

D. in debt

答案：

A. in peace

B. in danger

C. in relief

(答案→)D. in debt

解析：介词短语辨析。A和平地；B处于危险中；C轻松地；D负债；句意：用信用卡美国人花的钱比他们挣的还要多，所以他们总是负债。