4) Complete the first conditional sentences with your own ideas.

Here are possible answers: 1. I'll be happy if I go on vacation. 2. If it rains all weekend, I will stay home and watch movies. 3. If I forget my best friend's birthday, she will be upset. 4. I'll pass all my exams if I study hard. 5. If I don't feel well tomorrow morning, I'll stay home from school. 6. I'll go to bed early if I am tired. 7. I'll be disappointed if I miss the concert.