When a country’s currency got into trouble, the government would raise interest rates to attract foreign exchange, （ ）would in turn prop up the value of the currency.
A、
that
B、
which
C、
in that
D、
in which
【正确答案】：B
【题目解析】：
本题考查介词用法。
that和which引导定于从句时候的区别为：当空前有逗号时候，使用which引导非限定性定语从句。此处which也充当句子中的主语。此外，in which=where，这种情况下可以和that互换，所以只有which符合题意。故选B。
句意：当一国货币陷入困境时，政府会提高利率以吸引外汇，从而维持货币的价值。