I'm taking the B2 Czech exam in May and I was wondering if anybody has taken it or taught a course on it and could give me some advice? I've looked through a practise test and I think writing will be the toughest for me, are there any common mistakes that foreigners and Czechs make in regards to grammar in spisovná čeština? 1. For example, which is grammatically correct? vzal by si si ji.... vzal bys si ji.... vzal by jsi si ji... vzal by sis ji.... In spoken Czech I would say naturally either the 2nd or the 4th one but I don't know the officially correct way. 2. Also for example is myslejí or myslí spisovná? I´d guess myslejí is spisovná? Is this the same for all these 3rd person plural forms? E.g. Vědí, mluvějí? I only use the í form when speaking. My writing is very informal so I´m a bit worried about transorming it within 5 weeks. Any advice would be greatly appreciated.