What type of conditional is each sentence?

1.- If bill gets a part-time job, he will earn (earn) extra cash.

2.- Unless you study harder, you will fail (fail) your exams.

3.- If a teacher was nasty to me, I would complain (complain) about it to the head of the school.

4.- If kate doesn't gate (not/get) good grades, she'll be upset.

5.- If I had no friends, I would join (join) a club