exercise of conditional sentence

1.       You will pass your examination if you work hard.

You would pass your examination if you worked hard.

You would have passed your examination if you had worked hard.

2.       They will get wet if it rains

They would get wet if it rained.

They would have gotten wet if it had rained.

3.       He will tell you if you ask him.

He would tell you if you asked him.

He would have told you if you had asked him.

4.       They will be silly if they don’t take this opportunity.

They would be silly if they didn’t take this opportunity.

They would have been silly if they had not taken this opportunity.

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

If you failed to pay, they would cut off the electricity.

If you had failed to pay, they would have cut off the electricity.