单选题 They put some money away each month ______ rainy days.
  • A. in favor of
  • B. in need of
  • C. for the sake of
  • D. at the risk of
【正确答案】 C
【答案解析】for the sake of“为了……起见”；in favor of“支持，赞成；有利于”；in need of“需要……”；at the risk of“冒着……的危险”。句中rainy days意为“困难的日子”。