Ответ:
When my parents return from work I'll tell them about everything
If Jane passes her exams, she will go to Spain
If I want to take some pictures, I'll take my camera
If I see it with my own eyes, I'll believe it
If you don't invite Kate, she won't come to the party
If she learns about it, she will be depressed
If you plant these apple-trees, you will be absolutely free
If you make tea, I'll cut the cake
If you repair my computer, I'll be very grateful to you
If he packs all the things, he will call for a taxi
It it rains, I'll take my umbrella
If you don't promise not to tell anyone, I won't tell you this secret