Have to
А если подумать, то оба варианта правильны)
Может быть and - и
я не знаю слова анд на русском
1 if I will go to the party I will take a present
2 If you will not set your alarm clock you will not wake up at right time
3 If Nick will hear about this he will be angry
4 if it will rain we will not have a picnic on Saturday
5 if I will not study I will do badly in the exam
6 if my parents will say yes I will stay with you this weekend