Uzupełnij zdania czasownikami podanymi w nawiasach w odpowiedniej formie.

1 The Tower of London .... (build) in 1078 for William the Conqueror.
2 The city museum in Łódź ..... (locate) in the former palace of the Poznański family.
3 A viewing platform ..... (open) recently at the top of the highest building in Gdynia.
4 After lunch, we ...... (take) by our tour guide for a special tour of the old paper mill.
5 The complaints of several of our customers ..... (investigate) at the moment by the customer relations department.