ГДЗ по английскому языку 11 Класс класс упражнение - 32 р. 1

Read the example. Rewrite the sentences in a more informal style. 

Note: where = in/at which, when = on which   

This is the street where/in which he lives. (formal) 

This is the street (which) he lives in. (more usual)    

1. Do you know the company for which she works? 
2. The boys with whom we went out were my brother’s classmates. 
3. The office in which she works is nearby. 
4. He’s the man to whom we gave the parcel. 
5. Tomorrow is the day on which I go on holiday.