The pencil fell off the table and went _______across the floor.
It is useful to be able to predict the extent _____ a price change willaffect supply and demand.
I have kept that portrait _____ I can see it every day, as it always reminds me of my university days in London.
The ability to store knowledge makes computers different from every other machine _____ invented.
_____ quite recently, most mothers in Britain did not take paid work outside the home.
I’ve already told you that I’m going to but it, _____.