单选题 The director of the research institute came in person to ______ that everything was all right.
  • A. make out
  • B. make sure
  • C. make clear
  • D. make up
【正确答案】 B
【答案解析】[解析] 各项的意思为：make out了解，填写；make sure确定；make clear解释；make up弥补，化妆。所以，本题选B。