Valda, i only say these to add it to your informations, (©) Almost 90% of Kievans speak Russian, switching to literary Ukrianian from time to time when it's needed and NO surzhik.
Generally, They speak Ukrainian as their primary language in west Ukraine and Russian as their second language. In the south and east Ukraine they speak Russian as their primary language and Ukrainian as their second language. But the national language is Ukrainian.