1 if the road wasn't icy the accident couldn't happen

2 I wouldn't wet if I had an umbrella with me

3 If it didn't snow, we could go to school

4 if jack hadn't helped me I wouldn't be able to move the table

5 if you don't pay the electricity bill they will cut off the electricity

6 unless you drink much coffee you can sleep

7 if you press this button the machine will stop

8 unless you keep silent you will wake the baby up

9 if I knew her number I would ring her up

10 If tom didn't have to earn his living he could attend school

11 if the weather tomorrow is fine we can have a picnic in the park

12  unless we don't use fewer cars, we will reduce pollution. 

1 if the road was not icy the accident could not happen.

2 I would not wet if I has an umbrella with me .

3 If it did not snow, we could go to school

4 If jack had not helped me I would not be able to moving the table.

 5. If you do not pay the electricity bill they will cut off the electricity.

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