1.They had their English class in the morning yesterday, but normally they have English classes in the afternoon.
2. The police don`t find the criminal.
3. These two girls wouldn`t reach the bus stop in time if they walked so slowly.
4. I have already wrote a letter to my friend. I think he will get in a few days.
5. There was little time left, but they have driven at the top speed and come to the airport in time.
6. Peter has already pack these things when Kitty entered the room. He has been packing since morning.