Little Johnny felt the bag, curious to know what it _______.
I need to call my friend David ______ coat I walked off by mistake yesterday.
It was the training ______ he had at school ______ made him a good jumper.
I could just see a car in the distance, but I couldn't ______ what color it was.
So many uses have been discovered for this wood ______ the supply of white pine is becoming smaller and smaller.
A study shows that students living in non-smoking dormitories are less likely to ______ the habit of smoking.