The director of the research institute came in person to ______ that everything was all right.

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问题 The director of the research institute came in person to ______ that everything was all right.

选项 A、make out
B、make sure
C、make clear
D、make up

答案B

解析 make out了解,填写;make sure确定;make clear解释;make up弥补,化妆。
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