Lawrence Craven, a doctor from the USA, is the author of several published reports, one of _____ introduced the idea in 1953 _____ aspirin could reduce the risk of heart attacks.
Those cakes look delicious. Could I have _____ one?
Her lecture was hard to follow because she kept jumping from one subject to _____.
These trousers are dirty and wet — I’ll change into my _____.
Some of the students were late for the meeting, but I can’t remember _____.
“Who told you?” “Oh, somebodyorother, I’ve forgotten _____.”