The scientist corresponds with colleagues in order tolearn about matters ________ to her own research.

Lucy,doyou go to the park—Three times a week.

Have you ever come to Anhui before–No. It is the first time that I ______ here.

There ______ a teacher and some students in the classroom.

下列对《夜归鹿门歌》的理解，有误的一项是 （ ）