Throughout the world _______ advance has been made in science and technology is due to education which brings forth knowledge, creation and inventions.
—Catherine, I have cleaned the room for you. —Thanks. You ______ it. I could manage it myself.
This is the store ______ we visited the famous shop assistants.
The gentleman ______ you told me yesterday proved to be a thief.
It was ______ computer games that cost the boy a lot of time that he ought to have spent on his lessons.
______ a reply, he decided to write again.