单选题 The manager just ______ his resignation to the board meeting yesterday and today another one took his place.
  • A. sent up
  • B. sent off
  • C. sent out
  • D. sent in
【正确答案】 D
【答案解析】[解析] 本题的四个选项是由send为中心词构成的动词短语。A项的意思是“上升”，B项意为“邮寄；送别”，C项意为“送货；发函”，D项意为“呈送，提交”。根据句子的意思，D为正确答案。