Question

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

Answer 1

1. My friend hasn't come to see me since last Monday.

2. His sister  has learnt three foreign languages since I last saw her

3. I haven't  been to the Crimea since the war broke out

4. I've known Smirnov since I moved to Moscow

5. Have you been to the Caucasus since you took up climbing?​