Would you take my old TV in _______ for this camera?
I don’t know the reason _______ you were absent from the meeting, and I am not sure that someone will tell me the reason _______ you haven’t told me.
She said she was sorry ________ the train, so she had to stay for another day.
The actress looked so charming in the beautiful Vera Wang dress that photographers took _______ pictures of her.
Our maths teacher set so difficult an examination problem ______ none of us worked out.
This is the second factory, ______ I used to work, many workers of______ still have a good relationship with me.