if (conditional)

Lisa is tired all the time. She shouldn’t go to bed so late.

If Lisa ....................... to bed so late, she .............................. tired all the time

It’s getting late. I don’t think Sarah will call me now.

I’d be surprised if Sarah .......................................................................... now.

I’m sorry I disturbed you. I didn’t know you were busy.

If .................................................. you were busy, I ............................................ you.

There are a lot of accidents on this road. There is no speed limit.

There ........................................ so many accidents if ....................................... a speed limit.

You didn’t tell me about the problem, so I didn’t try to help you.

If ................................................ the problem, ................................................................. you.

It started to rain, but fortunately I had an umbrella.

I ........................................................ very wet if ..................................... an umbrella.

Mark failed his driving test. He was very nervous and that’s why he failed.

If he ........................................... so nervous, he .................................................... the test.