that you were coming I'd have baked a cake.
to help him if I had realized that he was ill.
10 If I (know)..
11 I (offer)..
12 If you had left that wasp alone it (not sting) you.
13 If I (realize) ......... .what a bad driver you were I wouldn't have come with you.
14 If I had realized that the traffic lights were red I (stop).....
15 But for the fog we (reach)............ our destination ages ago.