We’ll never forget the days ______ we lived in the country.

He is really like a gentleman and he usually thedoor open to let the ladies go first.

There are about more than five ___________"left-behind" students (留守学生) inChina.

依次填入下列各句横线处的成语，最恰当的一组是（ ）①医疗质量是关系到病人生命安危的大事，救死扶伤是医务人员 的天职。②中国传统的严父慈母型的家庭关系，常令父亲们 地承担起教育子女的义务。③在全国比赛中屡获金奖的我省杂技团， 地承担了这次出国演出任务。

He is very smart and canbe hidden from him