Ответы и объяснения

1. I did my best during the exam.
2. My mom asked me to make a cup of tea for her.
3. I made a mistake which ruined everything.
4. My friend did an excellent job in maths.
5. I did a research for my biology class.
6. I have to make my hair every morning.
7. Make an effort and you'll be successful.
8. My dad does the dishes and my mom does the cooking.
9. May I make a telephone call? I need to borrow your phone.
10. I did nothing for you to blame me.