The reason __________ he refused to attend the meeting was that they didn't give him an invitation earlier.
The teacher is writing ____ a piece of chalk on the blackboard while the students are writing ____ink in exercise books.
—You know. Bob is a little slow ____ understanding, so… — So I have to be patient ______ him.
We were just about ready to leave _____ it started to snow.
_____ the government agrees to give extra money , the theatre will have to close.
It shocked me to see ______ my neighbors treated their children.