1. I can't believe. I failed another test. But you must go to more classes and fewer parties.
2. Perhaps we can meet next week.
3 Could he speak English in childhood?
4. My neighbours can grow their own vegetables.
5 Could/can you turn the music down, please.
6. I cannot believe. I am already out of money. You must learn not to spend so much. But I can't help it, there are just things that I need to buy.
7. If you want to improve your English, you must work very hard.