They spent ____ of their holidays buying presents to take home .
In many countries in the world, breakfast is a snack _____ a meal, but the traditional English breakfast is a full meal.
I asked her _____ have to study before I could go to university.
_____ surprised me most was to see so many people waiting for my arrival.
--- Why did you call the police?--- I got home and found my house _____.
The government has taken some measures to prevent more trees from _____.