Explanation:

I know the player who scored two goals yesterday that is the girl..

Answer:

I know the student who had placed first in the competition

I know the place where we are supposed to be ar

I know the teacher who taught us Maths last year

I do not know the way which leads to the exit

This is the picture of the great genius Eintien

She is the girl who helped me carry the books to library

Here is the pen which u had lent me yesterday