Дополните предложения, обращая внимание на форму времениглагола-сказуемого главного и придаточного предложений.1. My friend hasn't come to see me since... 2. His sisterhas learnt three foreign languages since... 3. I haven'tbeen to the Crimea since... 4. I've known Smirnov since...5. Have you been to the Caucasus since...?