Make third conditional sentence for each of the situations/begin with the

Make third conditional sentence for each of the situations/begin with the words given below
1)She didnt have a car.She couldnt have driventhere (If she)
2)I didnt know she was the examiner/I мейд a silly joke)(Had)
3)I didnt go downstairs.I was afraid of the dark(I might)
4)She was nervous.She made a mistake(If.......)
5)The other pupil laughed at me.I cried(if ....)