单选题 The honest young man ______ the boss that he would try his best for the excellence.
  • A. ensured
  • B. assured
  • C. secured
  • D. insured


【正确答案】 B
【答案解析】动词辨析。ensure意为“保证、担保”；assure意为“断然地说”；secure意为“保护”；insure意为“给……保险”。只有assure符合句意。