— Who called you up just now?— Mary. She asked my homework.
Food prices are climbing around the world because farmers can't ____ demand for grain.
Most of the professors _____ to our school were from South Africa.
The single most important factor ____ contributes to success is _____ you do every single day.
You may drop in or just give me a call. __________ will do.
Both sides have accused __________ of breaking the contract.