2, Tina is making a cake for her mother's birthday.( PC)
3.Does it snow in winter in Instanbul?( возможно , что in Istanbul in winter, точно не знаю)(PS)
4.Marina isn't playing very well today.(PC)
5.Why are you singing that sad song(PC)
6.I'm thinking about the dance on Thursday.(PC)
7.A lot of British people go on holiday in Spain.(PS)