Choose the correct form. 1. If I go/went/had gone to Leipzig, I'll visit the zoo. 2. If it doesn't rain/didn't rain/hadn't rained, we'd be in the garden. 3. If you wear/wore/had been wearing a lighter jacket, the car driver will see you earlier. 4. We will watch/would watch/would have watched TV tonight if Peter hadn't bought the theatre tickets. 5. If I were a millionaire, I will live/would live/would have lived in Beverly Hills. 6. You would save energy if you switch off/switched off/has switched off the lights more often. 7. If we read the book, we will understand/would understand/would have understood the film

1. If I go to Leipzig, I'll visit the zoo.

2. If it didn't rain, we'd be in the garden.

3. If you wear a lighter jacket, the car driver will see you earlier.

5. If I were a millionaire, I would live in Beverly Hills.

6. You would save energy if you switched off the lights more often.

7. Возможны 2 варианта: If we read the book, we will understand the film. Если мы прочитаем книгу, то мы поймем о чем фильм. - Условное 1 типа.

If we read the book, we would understand the film. Если бы мы прочитали книгу, нам бы (сейчас) было понятно, о чем фильм. - Условное 2 типа.

4. We would have watched TV tonight if Peter hadn't bought the theatre tickets.

Зная формулы образования условных предложений, исходя из данного задания мы образуем предложения. В данном предлодении Peter hadn't bought указывает на то, что это предлоджение 3 условного типа, (описывают события прошедшего времени, которые могли бы произойти, но не произошли; в главном - would have + past participle, в придаточном - if Past Perfect). Но возможен другой вариант: в английском языке используются смешанные предложения 2 и 3 типа: We would watch TV tonight if Peter hadn't bought the theatre tickets.