Obligation, permission and possibility

I ____________________ usually choose my own hours at work , but I ____________________ work at least forty hours a week .

You ____________________ use your mobile . It ____________________ be switched off .

You ____________________ pay in pounds . You ____________________ also pay in euros or dollars if you prefer .

The main requirements in my job are that you ____________________ be good at making decisions and you ____________________ be a good leader .

Sorry I'm late home . I ____________________ stay at work and finish a report . I ____________________ leave until I'd sent it to my boss .

You ____________________ have a university degree to work here , but you ____________________ have a lot of relevant experience .

We ____________________ study at least one foreign language at school , but we ____________________ study English . We ____________________ choose from English , Russian , German and Chinese .