单选题 He will never seem to be successful, ______ hard he tries because no one is supporting him.
  • A) however
  • B) whenever
  • C) wherever
  • D) whatever


【正确答案】 A
【答案解析】[解析] however引导让步状语从句，后接形容同或副词，相当于no matter how。例如：You won't be heard，how ever loudly you shout. (不管你喊得多响，没人会听见你的声音。) 故选A。