1 Which goods does you office sell? Whom does your office sell a lot of different goods? How many different goods does your office sell?
2 Who usually receives businessmen at 10.30? When does your director receive businessmen? Whome does your director receive at half past ten?
3 Who must send three enquiries to foreign firms today? How many enquiries do your engineers must dend to foreign firms today? When do your engineers must send three enquiries to foreign firms? What do your engineers must send to foreign firms today? Whom must your engineers send three enquiries today?
4 Who usually brings the mail to ou director at 9 o`clock? What does the secretary usually bring to our director at 9 o`clock? Whom does the secretary usually bring the mail at 9 o`clock? What time does the sectretary usually bring the mail to our director? 
5 What does our country buy from GB? Which equipment does our country buy from GB? Where does our country buy a lot of different equipment?