Czasowniki modalne w przyszłości, przeszłości i teraźniejszości.

1. I'm sure that David took your books by mistake. David ...
2. It was a mistake to park outside the police station. You ...
3. It was unnecesary for you to clean the floor. You ...
4. I'm sure that Liz hasn't met Harry before. Liz ...
5. She studied hard so probably passed the exam. She ...
6. Maybe Rita was upset about something. Rita ...
7. It would be a good idea if Tom took a holiday. Tom ...
8. Jack is supposed to have arrived an hour ago. Jack ...
9. Look at the map. This is definietly the right road! This ...
10. It would have been better if you'd listened to my advice. You ...