Помогите с домашним заданием

1.If it was summer now, we would be somewhere near the sea.
2.If Jane comes on time tomorrow, I will be very much surprised.
3. If we were in London, we would speak to them.
4.John does know if his cousin arrives next Wednesday.
5.They have cleaned the rooms but not the kitchen. It still looks dirty. 

Может быть не верно, сори.