Давай сопоставим части предложений, чтобы получились грамматически и логически верные конструкции:
- They told me to prepare the project by tomorrow but it's almost impossible to do it so fast. I might finish it by tomorrow if I stay at work all night.
- She's only lived in Germany for a few weeks. She can't speak German very well.
- I've bought a lottery ticket. There's a chance I'll become a billionaire! I might become a billionaire.
- My cousins are coming this week, but I don't know which day. They could be coming tomorrow.
- I'm not sure I'm going to pass the exam. I don't feel very confident. I might not pass the exam.
Ответ: 1 - I might finish it by tomorrow if I stay at work all night; 2 - She can't speak German very well; 3 - I might become a billionaire; 4 - They could be coming tomorrow; 5 - I might not pass the exam.