单选题 They joined the army willingly.
  • A. intentionally
  • B. consciously
  • C. voluntarily
  • D. reluctantly


【正确答案】 C
【答案解析】willingly和voluntarily都表示“自愿地、欣然地”；intentionally：故意地；consciously：有意识地；reluctantly：不情愿地。