In the United Kingdom,police officers are not allowed to join ________ or to go on strike.

As far as Australian culture is concerned, the history of Australia can be divided into the following phases with the exception of ________.

The Mabo Judgement passed by Australia's High Court in June 1992 overturned the concept of terra nullius, which means ________.

Inthe1960spopmusicunderwentarevolutionwhen________becameworldfamousandturnedtheirhometownofLiverpoolintoaplaceofpilgrimage.

The longest river in Canada is ________.