ПОМОГИТЕ ПЛИЗ 20 БАЛОВ УМОЛЯЮ БЫСТРЕЕ

1)If I don't play tennis,I will stay home 2)If I stay home,I will be bored 3)If I bored,I will phone my friend. 4)If my friend is at home,he will come to my house 5)If he come to my house,we will play tennis on the computer.