I will never forget the classmates ______ I studied with.
My father ____ my brother for driving but he wanted to pick ____ the knowledge of the computer during his spare time.
His job is to sell the ____ carvings in the ____ department of the company.
I smoke out of ____ habit, not for ____ pleasure; for I have been in the habit for twenty years.
---You seemed to have been impressed by his songs.---Well, not exactly so. It was his way of singing____ his voice that really impressed me.
So many uses have been discovered for this wood ____ the supply of white pine is becoming smaller and smaller.