单选题 ______ anyone has found a bunch of keys, please leave them on my desk.
  • A. Only
  • B. Where
  • C. If
  • D. Though
【正确答案】 C
【答案解析】[解析] 本题考查条件状语从句。条件状语从句可以由if，unless，supposing(仅在问句中用)，in case，so(as)long as，so condition(that)，provided(that)等词引起。故本题答案为选项C。