—I didn’t know you play the piano. It sounds wonderful!—Thank you! I ______ it when I worked in UK.
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, _____.
You will want two trees about ten feet apart, from ______ to suspend your tent.
The reason for the party was _____ it was Sue’s birthday.