Are these correct?

Ex.3 Complete the first conditional sentences. Use the correct form of the verbs in brackets (Present simple or Future Simple)

1 You will lose a friend if you give a knife as a gift.
2 You get bad luck if you see a black cat in the street.
3 If the cows lay down in the fields, it will rain the next day.
4 You get bad luck for seven years if you break a mirror.
5 If you won’t wear blue on your wedding day, you will become unhappy.
6 If Janet doesn’t study hard, she will not pass the exam.
7 You get a better view if you sit over there.
8 If don’t find our tickets, we’re not get on the plane.
9 If I will finish school early, I will visit the science museum.
10 Susan will miss the film if she does not arrive soon.