单选题 When and where the new hospital will be built ______ a mystery.
  • [A] to remain
  • [B] remains
  • [C] remain
  • [D] is remaining


【正确答案】 B
【答案解析】[解析] 本题考查主谓一致。动名词、不定式、从句作主语时，谓语动词一般用单数。本句为主语从句作主语，看作单数，因此选B。