31. 1. Yes, summer holidays are often spent in the south.
2. Yes, the Black Sea coast is protected from the cold northern winds by the Caucasian mountains.
32. 1. Yes, the film was shown yesterday.
2. Yes, a list of books was made last Monday.
33. 1. Yes, the problem will be settled next Monday.
2. Yes, the novel will be completed next month.
34. 1. No, it (the school) is still being built.
2. No, it (the article) is still being written.
35. -
36. 1. No. They have been invited to the party.
2. No, thank you. The letters have been typed.
3. No. Train tickets have been booked.