Ответ:

1. Would you read this book if I lent it to you?

2. If I lived in the Caribbean, I would swim every day.

3. If we had an alternative, we wouldn't vote for John Smith.

4. Ms Black wouldn't be a minister if her father weren't the head of state.

5. If I gave you a ticket, would you come to the concert with me?

6. He wouldn't go to the library if he didn't need some more books.

Объяснение:

2 conditional = if + past simple ,--> would + V1

V1 - инфинитив без "to" (read, swim, come)