1. I'm sorry I …...(to be) busy yesterday at 9 p.m. I.....for my exam.(to prepare)
2. I ….. just ….....(finish) eating when Jonathan....(arrive).
3. They ...(drive) for an hour before they....... (realise) they were going the wrong way.
4. When I......(come) home my mom.......(still to cook) dinner for us.
5. I I took a shower, ……..(brush) my teeth and went to bed..