in charge（of）
having the care or management负 责
Who is in charge here？谁是这儿的 负责人？
He'll take this affair in charge．他将主管这件事。
Professor Chen is in charge of scientific research in our department． 陈教授负责我们系的科研工作。
He is a teacher in charge of our class．他是负责我们班的老师。