Odpowiedź :
1. We can leave the meeting early. - D. We needn't stay until the end.
2. We must leave the meeting early. - C. We can't stay until the end.
3. We mustn't leave the meeting early. - A. We must stay until the end.
4. We needn't leave the meeting early. - E. We can stay until the end.
5. We had to leave the meeting early. - B. We couldn't stay until the end.