Раскройте скобки употребляя глагол в требующейся форме 11. If my sister does not go to the south, we (to spend) the summer in St Petersburg together.
12. If they (not to go) to Moscow last year, they would not have heard that famous musician.
13. If you (not to get) tickets in the Philharmonic, we shall stay at home.
14. If you were not so careless about your health, you (to consult) the doctor.