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 domestic currency.
A、
in which
B、
that
C、
in that
D、
which
【正确答案】：D
【题目解析】：
本题考查定语从句的关系词使用。
因主句完整，所以例句为定语从句，而从句缺主语，AC两项排除；逗号后面不能加that，B选项排除；故选D“which”。
句意：当一个国家的货币陷入困境时，政府会提高利率来吸引外汇，这反过来又会提升本国货币的价值。