1) If I hadn’t drunk so much coffee, I would've slept better.

2) I would have gone to London for a month if I had had enough money.

3) She wouldn’t wait for me if I came very late.

4) If the weather were fine, they would play football outside.

5) Before you leave home, you will have to call the security agency.

6) If it rained, we wouldn’t go to the country.

7) If he knew her address, he would write to her.

8) If we hadn't taken a taxi, we would have missed the plane.

9) I wish I spoke two foreign languages.

10) If he sees her, he will be very glad.