The majority of Ukrainians is bilingual for Russian is used widely too.
Few people know foreign languages, most popular is English.
Yet convertible, Hryvna is extremely unstable currency. USD and DM are most popular in exchange booths. Other currency is difficult to exchange, it has low rates because of minor circulation in Ukraine. VISA, MasterCard and Eurocard are accepted in major hotels, restaurants, casinos, stores, though credit cards are not in wide use in the cities of Ukraine. Owners of American Express, Dinners may experience problems when using their cards even in regional centers.