If you _____ finished, I’ll start clearing up.
We work together to achieve our common purpose: _________world that is safer, cleaner and healthier than ________ one we found.
I don’t remember how many years ago ______________I paid my last visit to the principle of my primary school.
Everyone wants to be a friend of _______________ is considerate and shares the same interests.
---What can I do for you? ---I am looking for a birthday gift for my sister, _______at a proper price but fashionable.
---He was nearly killed in a car accident. ---Oh, when was ____exactly? ---It was in 2009______________he was driving to the airport to pick up his father. A. this; that B. that; when C. that; that D what; when