1, If the road is icy, the accident can happen.

2, I wouldn’t get wet, if I had an umbrella with me.

3, If the weather is snowy, we will not go to school.

4, If Jack didn’t help me, I wouldn’t be able to move the table.

5, If you fail to pay, they will cut off the electricity.

6, Unless you don’t drink too much coffee, you cannot sleep.

7, If you press this button, you will stop the machine.

8, Unless you keep silent, you will wake the baby up.

9, If I knew her number, I would ring her up.

10, If Tommy didn’t have to earn his living, he could attend school.

11, If the weather tomorrow is fine, we will have a picnic in the park.

12, Unless we don’t use fewer cars, we will reduce pollution.