1.will probably go
2.At
3.hurry / will catch
4.is
5.rises
6.If the authorities raise petrol prices , I will have to cycle to work
7.If she borrows it , she will have to give it back next week
8.We will get lost in the forest if she doesn't take the map with us
9.Because of the snow , we didn't go out for a walk
10.Because you advised , we didn't used that poisonous chemical
11.Because there is too much exhaust fume , people have to wear gauze masks in the streets