1. Complete the regrets or complaints about the past using should have/ shouldn't
have + past participle.
1. I didn't take the umbrella. Now it's raining.
2. I didn't visit the doctor yesterday. Now I have a toothache.
3. Mark lied to his teacher. Now he is punished.
4. Steve was very rude to Kim and didn't apologize to her.
5. I didn't study enough for the exam. I failed it.