даю 50 помогите плиииииз

1 If I do well in the exam, my parents will buy me an MP3 player.
2 If my sister borrows my clothes again, I will scream.
3 We'll leave at six o'clock if the weather is bad.
4 They don't mind if we're a bit late this afternoon.
5 Sarah will be very annoyed if Dave doesn't call her this evening.
6 Will you still go to the concert if the tickets cost 60 euros.
7 If Rania doesn't come to the party, will Grey be upset
8 I'll be surprised if Doug and Dana don't get a new car soon.